Input Drive Size: 1/2" Drive Shape: Square Length: 80mm Type: 12 Point Deep Socket Thin Walled Output Size: 11mm Opening: 12pt Thin Walled: Yes Product Dimension (Refer Line Drawing Image): D1 Size: 16.7mm D2 Size: 24mm H1 Size: 11mm H2 Size: 62mm L Size: 80mm