Infinite Product Solutions 22mm Crush Washer Black Oxide. Featuring a Black Oxide Finish and made from 304 Stainless Steel this washer is built to last. It fits Saiga 12 Vepr 12 Lynx 12 KS-12 Fostech Orign 12 Some Genesis 12 and more. Specifications for Infinite Product Solutions 22mm Crush Washer: Manufacturer: Infinite Product Solutions Color: Black Fabric/Material: Stainless Steel Last Chance: Yes Weight: 0.112 oz Finish: Oxide Width: 0.5 in Length: 1 in Caliber: 12 Gauge Height: 0.25 in Features of Infinite Product Solutions 22mm Crush Washer Provides over 1 full rotation (360 degrees) for proper muzzle alignment Corrosion Resistant Package Contents: Infinite Product Solutions 22mm Crush Washer Infinite Product Solutions CW-304-BO-M22: 22mm Crush Washer Black Oxide