• Anti-Slip Design open end (ASD)
• Typically used in lower torque applications
• Locking hole
• Use with locking extensions to reach into spaces too small for a mechanic’s arm or where the fastener is out of site.

The Proto Crowfoot wrenches are used in hard to reach, restricted access situations where a standard wrench or ratchet cannot reach. The arched surfaces are designed to spread the contact forces over a greater area and they keep the loads off the corners of the fastener which helps prevent fastener rounding. The full polish finish provides corrosion resistance and easy to clean surfaces. The Locking hole feature helps keep the crowfoot wrench engaged on the extension during use reducing downtime due to detachment of crowfoot in awkward spaces. The locking hole on 3/8" drive crowfoot wrenches available on fractional openings 1" and larger.