Proto 12-Point Deep Sockets feature the Torque Plus drive configuration, which engages fastener flats rather than corners. The radius-corner internal design shifts contact stress away from corners and distributes it over a larger surface area, minimizing slippage on stubborn, damaged, or soft-material fasteners.
The Tether-Ready design makes this socket suitable for working at heights or in environments where dropped tools are a hazard. Ideal for MRO, industrial maintenance, and professional mechanical applications requiring deep reach on 1-1/4-inch fasteners.