1/2 Sq. Dr. Socket 18mm Surface Length 77mm

Surface drive sockets are designed to retain contact with flat sides of nut to transmit high torque and reduce nut wear. Compared to FLAT DRIVE, SURFACE DRIVE utilizes contact on the larger area closer to the center of the bolt or nut. SURFACE DRIVE is useful for painted face nuts or any bolt or nut made of soft material, with less risk of damaging the faces. SURFACE DRIVE can also be useful for a bolt or nut that has been damaged or deformed. Input Drive Size: 1/2" Drive Shape: Square Length: 77mm Type: Surface Drive Deep Socket Output Size: 18mm Opening: Surface Product Dimension (Refer Line Drawing Image): D1 Size: 25mm D2 Size: 24mm H1 Size: 19mm H2 Size: 59mm L Size: 77mm