Hydraulic Breaker Hammer W/mounting Kit, Point, Chisel, & Tool Kit 750 Lb Hammer Fits Machines Weighing Between 8800-19,800. John Deere 301g Or Case 580m. Impact Rate Of 450 - 950 Bpm, Chisel Diameter 2.95, Chisel Length 29.5. This Is A Solid And Reliable Hammer That's Easily Maintained And Will Outlast The Rest. Full Warranty Included.