The Astro Pneumatic Shank Super Duty Air Hammer/Riveter, No. 4980, a maximum power air hammer for heavy duty off-road and automotive applications, can be used to service truck bushings, springs, king pins and more. The 4980 offers a 1/4" air inlet, a speed of 1,800 bpm, a 3/4" bore and weighs 4.8 lbs.