Boltuttrekker 8-21mm 12 deler

Use on the damaged screws & nuts.? Special spiral design for easier to remove the damaged screws.? Size: 3/8″ Dr. 8, 9, 10, 11, 12, 13mm (Length:32mm) 1/2″ Dr. 14, 15, 16, 17, 18, 19, 21mm (Length:34mm) 2pcs pin punches 72, ,80mm ? Camplete size for all you need.