Powerful, lightweight, hand held, air powered scaler quickly removes coatings, as well as rust and slag. Can be used to prepare various surfaces, including steel and concrete. Requires 6 CFM of air at 90 psi to produce 4600 blows per minute. One of the major benefits of the needle scaler is it’s ability to get into tight, hard to reach areas. Comes in a toolbox and is preloaded with 19, 3mm x 7 inch long, hardened steel needles. Needle reloads: part #805043 can be ordered separately.