Air Paving Breaker, 60 Pound Weight Class, Shank Size 1-1/4 x 6 In., Piston Stroke 5-3/4 In., Piston Bore 2-1/16 In., 1250 Blows per Minute, 70.0 CFM @ Full Load, Required Pressure 90 psi, Air Inlet 3/4 In. NPT, Min. Hose Size 3/4 In., Overall Length 27-1/2 In., T-Grip Handle Type, Latch Retainer Type, Spring Loaded Anvil Bushing Diggers, Paving Breakers, Rock Drills, and Backfill TamperPaving BreakersMore powerful with fewer parts than competitive models. Spring-loaded anvil bushing keeps tool on work surface. 1-pc. housing eliminates side rods and springs.