Open End Wrenches

Open end wrenches are hand tools for tightening and loosening compatible hex fasteners, with an open jaw that can engage the fastener from the side. They are commonly used by technicians and maintenance and repair professionals for routine fastening work, including jobs with limited clearance or obstructed access around the fastener.

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Helpful Buying Guide

How to Choose Open End Wrenches

Compare the fastener sizing system, opening sizes, wrench format, and access needed for the job. This category includes double-end hand wrenches in metric and fractional-inch sizes, along with crowfoot wrenches that connect to compatible drive tools for restricted-access work.

Visual Guide

Popular examples in this category

Metric Double-End Open-End Wrench, 16 mm x 17 mmMetric Double-End Open-End Wrench, 16 mm x 17 mmWBB3195959SAE 15° Offset Open-End Wrench, 1/2 in. x 9/16 in.SAE 15° Offset Open-End Wrench, 1/2 in. x 9/16 in.WBB3195962Double-Head Open-End Wrench, 24 mm x 27 mm, Chrome FinishDouble-Head Open-End Wrench, 24 mm x 27 mm, Chrome FinishWBB31934853/8-Inch Drive 16 mm Open-End Crowfoot Wrench3/8-Inch Drive 16 mm Open-End Crowfoot WrenchWBB3193363
Use Cases

Tighten or loosen compatible fasteners

Use double-end open-end wrenches for routine fastening tasks on compatible metric or fractional-inch hex fasteners. Two working ends provide two sizes in one hand tool.

How to Choose

Match the wrench to the fastener and access

Choose metric or SAE openings to match the hardware. Then compare the required size, whether two sizes on one wrench are helpful, and whether a standard hand wrench or drive-connected crowfoot is better suited to the work area.

Applications

Maintenance and repair work

These tools are designed for technicians and maintenance professionals working on fastening, removal, and positioning tasks. Crowfoot styles help reach locations where a standard wrench may be difficult to position.

Additional Information

Consider head and finish details

Angled or offset ends can help with limited access, while compact heads support positioning where clearance is restricted. Available finishes include matte chrome, satin chrome, chrome, and full polish.

2Opening sizes on double-end styles

Double-end models provide two compatible fastening sizes in one wrench.

15°Offset or angled ends

Available on selected metric and SAE double-end wrenches to help with access.

3/8 in. or 1/2 in.Crowfoot drive connections

Crowfoot options connect with compatible drive tools in these sizes.

43Pieces in one crowfoot assortment

The set provides a broad range of sizes for varied fastening applications.

Comparison Guide

Compare Open End Wrench Types

Use the tool format and connection method to narrow the selection for the fasteners and workspace involved.

TypeWhat It OffersBest Match From This Category
Metric double-end open-end wrenchTwo metric opening sizes in one hand tool; selected models have 15-degree angled ends and compact heads.Compatible metric hex fasteners and work areas with limited clearance.
SAE double-end open-end wrenchTwo fractional-inch opening sizes in one hand tool; selected models have 15-degree offset ends.Compatible fractional-inch fasteners where side engagement and access are needed.
Open-end crowfoot wrench or setAn open-end attachment for a compatible 3/8-inch or 1/2-inch drive tool; one set offers 43 pieces.Restricted-access fasteners where a standard wrench may be difficult to position.
Planning Guide

Plan the right fit before choosing

Start With Fastener Size

Choose metric or fractional-inch coverage

Select an opening that matches the compatible fastener. Double-end designs combine two opening sizes on one wrench, while available crowfoot options include individual metric and fractional-inch openings as well as a 43-piece assortment.

  • Metric double-end examples span 4 mm x 5 mm through 30 mm x 32 mm.
  • SAE double-end examples include 1/4 in. x 9/32 in., 1/2 in. x 9/16 in., and 9/16 in. x 5/8 in.
  • Crowfoot examples include 15 mm, 16 mm, and 1-3/4 in. openings.
Choose the Wrench Format

Compare hand-wrench and crowfoot designs

A standard double-end open-end wrench provides two fixed sizes in a handheld format and can engage a compatible fastener from the side. An open-end crowfoot wrench connects to a compatible drive tool to help extend access where standard wrench positioning is difficult.

  • Double-end wrenches offer two opening sizes in one tool.
  • Crowfoot wrenches are available with 3/8-inch or 1/2-inch drive connections.
  • The 43-piece crowfoot set is intended for confined or restricted-access areas and lower-torque fastening tasks.
Plan for Clearance and Placement

Look for access-focused jaw and head features

When working around obstructions or in limited-clearance areas, compare the end geometry and jaw profile. Several double-end wrenches have 15-degree angled or offset ends and compact heads, while specified double-head styles use chamfered ends and a continuous-arc profile.

  • 15-degree ends help improve access in tight work areas.
  • 45-degree chamfers help make placement onto a fastener easier.
  • Continuous-arc profiles help maintain fastener contact and help minimize jaw spreading.
FAQ

Common questions before buying

What is the difference between metric and SAE open end wrenches?

Metric wrenches use millimeter opening sizes, while SAE wrenches use fractional-inch opening sizes. Match the wrench system and size to the compatible fastener.

Why choose a double-end open-end wrench?

A double-end wrench provides two opening sizes in one hand tool, such as 16 mm and 17 mm or 1/2 in. and 9/16 in.

When should I use an open-end crowfoot wrench?

Use a crowfoot wrench when a standard wrench may be difficult to position. It connects to a compatible drive tool to help reach restricted or obstructed locations.

What do angled, offset, or chamfered ends help with?

Angled or offset ends help improve access in tight areas, and chamfered ends help make placement onto a fastener easier.

Helpful Buying Guide

How to Choose Open End Wrenches

Compare the fastener sizing system, opening sizes, wrench format, and access needed for the job. This category includes double-end hand wrenches in metric and fractional-inch sizes, along with crowfoot wrenches that connect to compatible drive tools for restricted-access work.

Visual Guide

Popular examples in this category

Metric Double-End Open-End Wrench, 16 mm x 17 mmMetric Double-End Open-End Wrench, 16 mm x 17 mmWBB3195959SAE 15° Offset Open-End Wrench, 1/2 in. x 9/16 in.SAE 15° Offset Open-End Wrench, 1/2 in. x 9/16 in.WBB3195962Double-Head Open-End Wrench, 24 mm x 27 mm, Chrome FinishDouble-Head Open-End Wrench, 24 mm x 27 mm, Chrome FinishWBB31934853/8-Inch Drive 16 mm Open-End Crowfoot Wrench3/8-Inch Drive 16 mm Open-End Crowfoot WrenchWBB3193363
Use Cases

Tighten or loosen compatible fasteners

Use double-end open-end wrenches for routine fastening tasks on compatible metric or fractional-inch hex fasteners. Two working ends provide two sizes in one hand tool.

How to Choose

Match the wrench to the fastener and access

Choose metric or SAE openings to match the hardware. Then compare the required size, whether two sizes on one wrench are helpful, and whether a standard hand wrench or drive-connected crowfoot is better suited to the work area.

Applications

Maintenance and repair work

These tools are designed for technicians and maintenance professionals working on fastening, removal, and positioning tasks. Crowfoot styles help reach locations where a standard wrench may be difficult to position.

Additional Information

Consider head and finish details

Angled or offset ends can help with limited access, while compact heads support positioning where clearance is restricted. Available finishes include matte chrome, satin chrome, chrome, and full polish.

2Opening sizes on double-end styles

Double-end models provide two compatible fastening sizes in one wrench.

15°Offset or angled ends

Available on selected metric and SAE double-end wrenches to help with access.

3/8 in. or 1/2 in.Crowfoot drive connections

Crowfoot options connect with compatible drive tools in these sizes.

43Pieces in one crowfoot assortment

The set provides a broad range of sizes for varied fastening applications.

Comparison Guide

Compare Open End Wrench Types

Use the tool format and connection method to narrow the selection for the fasteners and workspace involved.

TypeWhat It OffersBest Match From This Category
Metric double-end open-end wrenchTwo metric opening sizes in one hand tool; selected models have 15-degree angled ends and compact heads.Compatible metric hex fasteners and work areas with limited clearance.
SAE double-end open-end wrenchTwo fractional-inch opening sizes in one hand tool; selected models have 15-degree offset ends.Compatible fractional-inch fasteners where side engagement and access are needed.
Open-end crowfoot wrench or setAn open-end attachment for a compatible 3/8-inch or 1/2-inch drive tool; one set offers 43 pieces.Restricted-access fasteners where a standard wrench may be difficult to position.
Planning Guide

Plan the right fit before choosing

Start With Fastener Size

Choose metric or fractional-inch coverage

Select an opening that matches the compatible fastener. Double-end designs combine two opening sizes on one wrench, while available crowfoot options include individual metric and fractional-inch openings as well as a 43-piece assortment.

  • Metric double-end examples span 4 mm x 5 mm through 30 mm x 32 mm.
  • SAE double-end examples include 1/4 in. x 9/32 in., 1/2 in. x 9/16 in., and 9/16 in. x 5/8 in.
  • Crowfoot examples include 15 mm, 16 mm, and 1-3/4 in. openings.
Choose the Wrench Format

Compare hand-wrench and crowfoot designs

A standard double-end open-end wrench provides two fixed sizes in a handheld format and can engage a compatible fastener from the side. An open-end crowfoot wrench connects to a compatible drive tool to help extend access where standard wrench positioning is difficult.

  • Double-end wrenches offer two opening sizes in one tool.
  • Crowfoot wrenches are available with 3/8-inch or 1/2-inch drive connections.
  • The 43-piece crowfoot set is intended for confined or restricted-access areas and lower-torque fastening tasks.
Plan for Clearance and Placement

Look for access-focused jaw and head features

When working around obstructions or in limited-clearance areas, compare the end geometry and jaw profile. Several double-end wrenches have 15-degree angled or offset ends and compact heads, while specified double-head styles use chamfered ends and a continuous-arc profile.

  • 15-degree ends help improve access in tight work areas.
  • 45-degree chamfers help make placement onto a fastener easier.
  • Continuous-arc profiles help maintain fastener contact and help minimize jaw spreading.
FAQ

Common questions before buying

What is the difference between metric and SAE open end wrenches?

Metric wrenches use millimeter opening sizes, while SAE wrenches use fractional-inch opening sizes. Match the wrench system and size to the compatible fastener.

Why choose a double-end open-end wrench?

A double-end wrench provides two opening sizes in one hand tool, such as 16 mm and 17 mm or 1/2 in. and 9/16 in.

When should I use an open-end crowfoot wrench?

Use a crowfoot wrench when a standard wrench may be difficult to position. It connects to a compatible drive tool to help reach restricted or obstructed locations.

What do angled, offset, or chamfered ends help with?

Angled or offset ends help improve access in tight areas, and chamfered ends help make placement onto a fastener easier.

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