SRD-50 Request a Free Quote Continue Shopping Print this page Share this page Photos Specifications Dimensions Description Rock Drill Weight 51lb Chuck Size 1" x 4 1/4" or 7/8" x 4 1/4" or 7/8" x 3 1/4" Frequency 2300 bpm Air Consumption 92.2ft³/min Air Coupling 3/4" MNPT Standard Equipment: Optional Equipment: