Wrench Heads


Reach nuts obstructed by a fluid line or other barrier with these wrench heads. Connect them to your socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench. Also known as crowfoot wrenches.
For technical drawings and 3-D models, click on a part number.
Drive Size | Overall Lg. | Thick. | Center-to-Center Lg. | Material | Each | |
Metric | ||||||
---|---|---|---|---|---|---|
1/4" Square Drive | ||||||
8 mm | 31/32" | 1/4" | 9/16" | Chrome-Plated Steel | 0000000 | 000000 |
Wrench Head Sets



Reach nuts obstructed by a fluid line or other barrier with the wrench heads in these sets. Connect them to a socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench. Also known as crowfoot wrenches.
Wrench Opening Shape | No. of Pieces | Includes | Material | Container Type | Each | |
Inch/Metric | ||||||
---|---|---|---|---|---|---|
3/8" Square Drive | ||||||
Rounded | 30 | Wrench Heads (Inch): 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1" Wrench Heads (Metric): 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm | Nickel-Plated Steel | Plastic Clip Rail | 00000000 | 0000000 |
Metric | ||||||
1/4" Square Drive | ||||||
Rounded | 7 | Wrench Heads: 7 mm, 8 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm | Chrome-Plated Steel | __ | 00000000 | 000000 |
Secure-Grip Wrench Head Sets


Grip more of your fastener head with these wrench heads. They have a hex or 12-point opening with more surface area than rounded wrench heads, so they make more contact with fasteners for a better hold. Also known as flare-nut crowfoot wrenches or line wrenches, they're often used with flared tube fittings as well as fuel and hydraulic lines. Connect them to a socket extension and ratchet wrench to turn fasteners where clearance is limited from both the top and side. You can also attach one directly to your ratchet wrench to convert it into an open-ended ratcheting wrench.
No. of Pieces | Includes | Material | Wrench Opening Shape | Each | |
3/8" Square Drive | |||||
---|---|---|---|---|---|
18 | Wrench Heads: 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 27 mm | Nickel-Plated Steel | Hex | 00000000 | 0000000 |
Snap-Open Ratcheting Box-End Wrench Head Sets


Get a strong grip in tight areas, even on fasteners that are rounded or damaged. Open the spring-loaded jaws in these heads to access a fastener like an open-end wrench; the jaws will automatically close when you push against the fastener. The 6-point opening grips hex heads on all sides. Also known as crowfoot wrenches. Attach one to a socket extension to reach obstructed fasteners. With the ratcheting feature, you can turn the fastener without removing and repositioning the wrench head.
No. of Pieces | Includes | Turn Required to Ratchet | Material | Wrench Opening Shape | Container Type | Each | |
3/8" Square Drive | |||||||
---|---|---|---|---|---|---|---|
6 | Wrench Heads: 8 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm | 15° | Stainless Steel | 6-Point | Foam Tray | 000000000 | 0000000 |