Input Drive Size: 3/8" Drive Shape: Square Length: 32mm Type: Weld Nut Socket Output Size: 12mm Opening: 4pt Weld Nut: Yes Product Dimension (Refer Line Drawing Image): D1 Size: 24.5mm D2 Size: 22mm H Size: 12mm L Size: 32mm 3/8 Sq. Dr. Socket 12mm 4 point Length 32mm Weld Nut