The streamlined pattern gives these grips and your handgun a modern yet refined look. These grips are bead blasted and feature a subtle matte finish. The POLYMER EXTREME (PX) series 1911 pistol grips are constructed of heat resistant, high impact, and high bending strength polymers. These grips are inspired by Ray Gorzyn who is an accomplished 1911 gunsmith with over 30+ years of experience and an active IPSC shooter. Hundreds of 1911 have been custom built and produced by Ray and are considered top of the line. Note that our matte finish grips are a dull matte black and look more grey. Simply take some light silicone spray and magically they turn into a smooth jet black. All our 1911 grips are conveniently pre-cut for ambi safeties. Features Thickness: 0.295" (0.749cm) Density: 1.42 Water Absorption: 0.3% Molded Shrinkage: 0.7%-1.25% Heat Resistance:(2hr/'C): 200'C Impact Strength: 3.0-3.5 Kgf-cm/cm2 Flexible Strength: 9.5 Kgf/mm2 Tensile Strength: 5.6 Kgf/mm2 Compressive Strength: 22.0 Kgf/mm2 Isolation Resistance: 1x5^(8-9)I(C) (ohm) Breakdown Voltage: 11.0Kv/mm