Sockets-3/8" drive

Armstrong sockets are known for their strength, speed, access and safety standards. 

Strength:  Specifically heat treated for the correct balance of strength and durability.

Strength & Safety:  Radius corner design engages the flats of the fastener, not the corners, providing 15%-20% more torque.  Also prevents rounding of fasteners and enhances the turning of worn, rounded fasteners---extending fastener life and reducing chance of slippage.

Speed & Safety:  EYE-D laser etched markings optimize the size identification as well as provide SAE/Metric differentiation, even in low light conditions.

Access:  Manufactured to industrial specifications assuring a thin wall design with precise nut end dimensions.