Chicago Pneumatic CP7120 Needle Scaler Features:With 4,600 blows per minute, adjustable sleeve for job specific requirements, and high wear resistant steel needles, this is a dependable tool for all your surface preparation needs.This tool can easily convert from a needle scaler to a chisel scaler.Great features, durability, flexibility, and power to clean. Needle scaler for all your surface preparation needs:Speed: 4,600 blows per minute for highly efficient work.Adjustability: Sleeve adjusts for needle protrusion in tune with application needs.Wear resistant Needles: 19 needles made of 1/8" high wear resistant steel.Chicago Pneumatic CP7120 Needle Scaler