Bi hexagon. 12 point. This range of 1inch 25mm series sockets is the ultimate
for high torque hand applications. The Bi hexagon design gives strength and
reliability under heavy loads. Used extensively in heavy plant rail shipyard and
oil rig industries. The 12 point bi hexagon side drive design gives a higher
torque than normal sockets. Made from chrome vanadium fully chrome plated with a
mirror finish and aluminium free. Chamfered leading edge ensures easy fastener
location.