Pneumatic Piston Scaler 1 or 3 piston IMPA Code: 590382, 590383 Ideal for the removal of oil paint and rust. Pneumatic Piston ScalerIdeal for the removal of oil paint and rust. Technical Date: IMPA CodeModelPistonPiston Dia.StokeFree Speed R.P.M Air Inlet PTAir Pressure590382PSH-1130mm1580003/86.2Bar590383PSH-3322mm1070003/86.2Bar Pneumatic Piston Scaler