Air DiggerShank Size 7/8 x 3-1/4 In., Piston Stroke 2-1/2 In., Piston Bore 1-11/16 In., 2350 Blows per Minute, 45.0 CFM @ Full Load, Required Pressure 90 psi, Air Inlet 3/8 In. NPT, Min. Hose Size 1/2 In., Overall Length 18-7/8 In., D-Grip Handle Type, Latch Retainer Type DiggersLatch retainer-type diggers for light- and medium-weight use.Diggers, Paving Breakers, Rock Drills, and Backfill Tamper