Description 12 pc. 1/2" Drive Deep Impact Socket Set - Metric 10mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm and 22mm in a Plastic Tray. This item is a suitable alternative for the following: 975-M591DB, 974-M591DB, 2750M591DB