- 9 piece chisel set including tapered chisel and flat chisel for you use to Shovel, Hammer, Break, Dig and Grooving, etc. - Quick-change chisel retainer make efficient work, you can change chisels quickly and easily. - Buffer spring retainer can effectively control the shock produced during an impact, and can maintain the normal repeated operation. - Used for shaving brake pad, clear away welding splashes, cleaning concrete mixer, groove concrete channel, etc. - The alloy machine body is light and durable. Impact Speed: 2800rpm, Air Inlet size: 1/4, Air consumption: 0.1m³/Min. Comparation of the Retainer