Remove rust, mill and flux scale, old paint, and more from metal surfaces when doing body and finishing work with the STEELMAN 29121NS Pneumatic Needle Scaler and Flux Chipper. This 18-inch long tool weights in at 6.65-pounds and conceals inside a powerful pneumatic motor capable of delivering 4,600 blows per minute (BPM). The barrel and interior pistons are made of heat treated steel for long lasting durability and operational life as they drive the nineteen (19) 1/8-inch diameter needles to remove old finishes and reveal the pristine metal beneath. The handle's air inlet is threaded to accept 1/4-inch NPT quick connect fittings and adapters for easy connection to existing shop pneumatic air delivery systems. Energy efficient, this air hammer operates on 4 CFM of compressed air at 90 PSI. So whether you need to remove scale prior to welding, strip paint before body work, or any similar job, STEELMAN tools will help you work smarter and faster.