Input Drive Size: 1" Drive Shape: Square Length: 80mm Type: 6 Point Semi-Deep Impact Socket, Thin Walled Output Size: 21mm Opening: 6pt. Thin Walled: Yes Product Dimension (Refer Line Drawing Image): D1 Size: 34.8mm D2 Size: 53mm H1 Size: 21mm H2 Size: 48mm L Size: 80mm