HMB680 Hydraulic Breaker / Hammer Attachment - New! Unused 680 Excavator Type Hydraulic Hammer Breaker Attachment comes with New Chisel, Hydraulic Hoses, Nitrogen Charging Kit w/ Bottle. Fits 5 - 7 Ton Excavator. Buy New for the cost of used! Specifications Operating Weight: 740 lbs. Impact Rate:  500 - 900 Bpm Chisel Diameter:  68 mm Hose Diameter:  1/2 inch Class Weight:   3 - 7  tons