Universal Tool Chipping Hammer Retainers for use with Universal Tool Chipping Hammers. Universal Tool Stroke Chipping Hammers feature a crisp plate valve for extra hard hitting and control and an ergonomically advanced design for operator comfort. Universal Tool Stroke Chipping Hammers also feature a heat treated precision cylinder and piston for a longer life and a rugged four bolt construction for heavy duty use.Universal Tool Stroke Chipping Hammers have a 7/8”-24 Inlet bushing available upon request. Universal Tool Stroke Chipping Hammers are best suited for foundry, plant maintenance and general contractor work.