Impact Energy Class:750 ft lb Operating Weight:926 lbs Length With Tool:51in Overall Width :49 in Working Steel Diameter:8.58 in Blows Per Minute (variable):620 - 1150 Oil Flow Range:11.9 - 21.9 gpm Operating Pressure Range:1500 - 3000psi Relief Pressure:2,310 - 2,610 psi Recommended Machine Carrier Range:7,000 - 15,900 lbs Inflation pressure: 160-200 PSI