Planishing Hammer Sheet Metal Capacity Aluminum 16 ga Sheet Metal Capacity Stainless Steel 22 ga Sheet Metal Capacity Steel 16 ga Throat Depth 19 5/8 in Hammer Mode Rigid Speed Setting Variable Speed Maximum Blows per Minute 1 350 bpm Adjustable Depth Stop No Anvil Die Type Flat 6 in 12 in Hammer Die Type Flat Air Inlet Size Hose Air Inlet Type 1/4 in Male Air Inlet Gender 1/4 in Air Inlet Male