Input Drive Size: 3/4" Drive Shape: Square Length: 72mm Type: 12 Point Socket Output Size: 2 5/16" Opening: 12pt Product Dimension (Refer Line Drawing Image): D1 Size: 78.5mm D2 Size: 53mm H Size: 36mm L Size: 72mm 3/4 Sq. Dr. Socket 2.5/16 12 point Length 72mm