Veloce! Italian for "fast!" Their Veloce grips are a mix of textures running multiple directions to prevent slippage and keep you on target so you can GO FAST! These grips are made to work with stock screws and do not include O-ring or screws. Product Features G10 Material: Their grips are made from Phenolic G10. G10 is only 1/2 the weight of aluminum but nearly as strong with a grippier texture. G10 won t crack or shatter, like the cheaper polymer and acrylic grips are known to do. The color is dyed into the material, so scratches aren t an issue. G10 grips will last a life time under normal use.