Change forends without having to worry about disassembling your receiver. The Mag Socket Wrench set allows for quick changes of any forend for Mossberg, Winchester and Remington Shotguns. Precision CNC Machined of Military Type III Anodized, 6061 T6 Aluminum. Features checkered grip and laser-etched lettering. Manufactured in the USA. Fits 12 gauge Mossberg 500/535/550/875, 12 gauge Winchester 1200/1300, and 12 and 20 gauge Remington 870 Shotguns.