Extraction tool for unscrewing damaged screws or threaded boltsfor screws: 3/16-1/4" M5-M6, 5/16-3/8" M8-M10, 7/16-1/2" M10-M12, 1/2-9/16" M12-M16, 5/8-3/4" M16-M20 with hexagon drivewith centre punch and double cutting edgesuitable for right-hand and left-hand threadsin textile bag.