Request a Quote Share Print Specifications Benefits and Features Equipment Compare Models Dimensions Description Trench Digger Weight 37 lb Frequency 1850 bpm Air Coupling 1/2 NPT Chuck Size 7/8"x3-1/4" or 1"x4-1/4" Air Consumption 37 ft³/min Description Trench Digger Weight 37 lb Frequency 1850 bpm Air Coupling 1/2 NPT