The Mueller Kueps Heavy Duty Vibro Impact Air Hammer loosens tight connections on trucks, agricultural machinery, and heavy equipment. This high performance air hammer also assists in the disassembly of conical seat connections, wheel bearings, bushings, rusted bolt / screw connections, and also supports pullers. This kit includes Vibro-Impact Air Hammer, heavy duty Vibro-Impact Flat Chisel, and heavy duty Vibro-Impact 20mm Pin Driver