Input Drive Size: 3/8" Drive Shape: Square length: 25mm Type: Inhex Bit Socket Output Size: 6mm Opening: Hex Product Dimension (Refer Line Drawing Image): D Size: 18.5mm H1 Size: 7.5mm H2 Size: 10mm L Size: 25mm 3/8 Sq. Dr. Bit Socket 6mm Hex Length 25mm