Bamboo Chisel Mortiser - Pneumatic Max. Chisel Capacity : up to 19 mm Max. Depth of Cut : 3 1/2" Max. Height of Workpiece : 6" Up / Down movement of Table : 3 1/2" Air Pressure Required : 5 to 7 (kg/ cm^2) (kg / cm2) Electric Motor : 1 HP/2800 RPM