The JE Machine Grip Screw Bushing Set is perfect for a new build, or just giving new life to an old warhorse. FeaturesCNC machined from high-grade steel with black oxide treatment.For all full-size 1911 grips and grips not less than 0.188" (3/16") thick.Include: 4pcs black 1911 standard bushings/4pcs black 1911 screws/4 o-rings / T10 Torx key.The O-ring washers give the grips a secure feel when tightened down.