pneumatic chipper Heat treated piston and cylinder forlonger life.Pulley valve provides precise controland smooth operation.Lift the throttle lever up, to blow offchips-withou extra effort.Versatile design – weld flux chipper may be converted to a needlescaler by adding A9255831 needle scalingattachment – two tools in one. Needle scaler needle mad of hardened alloy steel, to ensurelong life.