Proto Tether-Ready 1/2" Drive Deep Socket 21 MM - 12 Point J5321M-TT-SBD

Proto's J5321M-TT-SBD is a heavy-duty 21mm metric deep socket engineered for industrial professionals who require the highest standards of safety and efficiency. As a vital part of the Proto® tethered tool collection, this 1/2-inch drive socket is specifically designed to prevent accidental drops in the workplace, making it ideal for maintenance at heights or near critical infrastructure. With its 12-point design and TorquePlus™ technology, the J5321M-TT-SBD delivers a high degree of torque while protecting fasteners, ensuring reliable performance in the most challenging mechanical applications.
Key Features
Integrated tether-ready system features four detent holes that allow for a full 360 degree rotation of the safety lanyard for maximum flexibility.
High-performance TorquePlus™ configuration shifts pressure away from fastener corners, allowing for a higher degree of grip and reduced rounding.
Deep-well construction is optimized for accessing nuts on long-threaded studs and fasteners located in recessed metric assemblies.
Precision-crafted from heat-treated alloy steel and finished with polished chrome for a high degree of corrosion resistance.
12-point opening facilitates faster fastener engagement in cramped industrial spaces by providing more starting positions.
This professional-grade metric socket has a total weight of 0.44 pounds.