HMB450 Hydraulic Hammer Breaker Attachment - New! Unused Hydraulic Breaker / Hammer Attachment comes with New Chisel, Hydraulic Hoses, Nitrogen Charging Kit w/ Bottle. Fits 6-9 Ton Excavator. Buy New for the cost of used! Specifications: Operating Weight: 331 lbs. Impact Rate:  700 - 1200 Bpm Chisel Diameter:  45 mm Hose Diameter:  1/2 inch Class Weight:   1.2 - 3 ton