SMC Large Locking 'D' Heat treated

All the features and benefits of SMC's Large Steel Locking D Carabiner with the increased strength (an additional 40%) that results from being heat-treated. The sleeve locks on the gate rather than the body of the carabiner, eliminating problems of the knob binding on the frame after the carabiner has been loaded. Features stainless steel gates and locking sleeves for greater strength and reliability plus all the components in this carabiner are meticulously hand-finished after machining resulting in the smooth, free gate action that is the hallmark of all SMC carabiners. Additionally, each carabiner is 100% hand-inspected for gate action and other functional characteristics before leaving our factory. Made in the U.S.A.