Proto 3/8" Drive Locking Extension 3" J5260-03L-SBD

Proto's professional-grade 3mm metric tether-ready deep socket engineered for high-precision industrial maintenance and assembly. Featuring a 3/8 inch drive and a 12-point configuration, this tool is designed to provide maximum accessibility and engagement on small metric fasteners while ensuring an essential safety layer for elevated work. The integrated Positive Control System requires a separate tool for attachment or removal, ensuring the socket cannot be accidentally detached—a critical safety feature for preventing dropped objects in "at-height" environments. Built with a heat-treated alloy and a durable chrome finish, this deep socket is designed to resist wear and corrosion throughout a long service life.
Key Features
Total product weight is 0.08 pounds, offering a lightweight design for high-speed industrial operations.
Features a built-in tether-ready attachment point and four detent holes to ensure the pin detent engages correctly from any direction.
Deep profile with an overall length of 2-1/2 inches and a bolt clearance depth of 2-1/8 inches for reaching deeply recessed fasteners.
Features a 3/8 inch square drive with a 3mm 12-point opening designed for quick engagement and precise torque transfer.
TorquePlus™ technology protects fasteners by distributing force across flat surfaces rather than corners to prevent rounding.
Full polish chrome finish is applied after holes are bored to provide superior corrosion resistance and a professional look.
Engineered to perform consistently in workspace temperatures reaching up to 100 degrees.