GearWrench 81916 22-piece retentive pattern combination non-ratcheting wrench approximate - system of measurement, sizes 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 27, 30 and 32 mm retentive pattern combination non-ratcheting wrenches. These wrenches prolonged reach for laborious to get to fasteners. Box end part of wrench is for hand clearance. Open end of wrench has Surface Plus ™ which provides for stronger grip on fasteners, while reducing fastener rounding and delivers up to 25 percent more torque. GearWrench 81916 a topographic point polish, five-spot process finish for retentive tool life and is made from the finest process vanadium steel for strength. Wrenches in wrench roll for prophylactic storage.