Ko-Ken 16310M-21 3/4 Sq. Dr. Socket 21mm Surface Drive Length 100mmGeneral Information Brand Ko Ken Tools Part Number 16310M 21 Product Type Socket Packaging Bulk Country of Origin Japan UPC 4991644009206 California Residents Proposition 65 Warning Physical Characteristics Length 100 Mm Weight 0. 70 kg 1. 54 lb Details Wrench Type Socket Size 21 Mm Features Drive Size : 3 4 Inch Length: 100 mm Type: Deep Surface Drive Socket Output Size : 21 mm Made In Japan Drive Connector Size 3 4 Inch