Easy to use, foot pedal control keeps your hands free - Ideal for steel, aluminum, brass, stainless steel - Made of sturdy iron material,stable structure,can turn wrinkled and dented metal into a smooth finished product - Ideal tool for vehicle sheet metal parts - You can use the ...Easy to use, foot pedal control keeps your hands free - Ideal for steel, aluminum, brass, stainless steel - Made of sturdy iron material,stable structure,can turn wrinkled and dented metal into a smooth finished product - Ideal tool for vehicle sheet metal parts - You can use the handwheel at the bottom to adjust the opening of the material This Industrial Pneumatic Polishing Hammer with Stable Structure. - It's Simple to Use,Turn Wrinkled and Dented Metal into Smooth. Specifications:Color:blue+black - Material: Iron - Gross weight: 22kg - Anvil size: 1'', 2'', 3''Speed: 875-1350rpm - Anvil to hammer opening: 4''Working pressure: 50 to 100 (maximum) PSI Package Including1 x Industrial Pneumatic Polishing Hammer