Request a Quote Share Print Specifications Benefits and Features Equipment Compare Models Dimensions Description Rock Drill Weight 61 lb Frequency 2250 bpm Air Coupling 3/4" MNPT Chuck Size 1" x 4 1/4" or 7/8" x 4 1/4" Air Consumption 98 ft³/min Description Rock Drill Weight 61 lb Frequency 2250 bpm Air Coupling 3/4" MNPT