Specifications Item Model Number: JH-68 Engine Type: 4-Stroke Displacement: 37.7cc Included Piling Sleeve Diameters: 55mm, 70mm Fuel Tank Capacity: 0.65L ±5% Rated Power: 1kW ±5% Rated Speed: 6500 RPM Maximum Torque Speed: 6000 RPM Maximum Torque: 1.6 N·m Impact Frequency: 2400-3000 BPM Impact Energy: 20-50J Main Materials: Die-cast Aluminum + Steel+ Plastic Product Dimensions: 615 x 377 x 480 mm / 24.21 x 14.84 x 18.90 in Net Weight: 20.7 kg / 45.64 lbs Package Content Post Driver x 1 Aluminum Sleeve (55 mm) x 1 Iron Sleeve (70 mm) x 1 Funnel x 1 Filter Screen x 1 Tool Set x 1 Measuring Cup x 1 Oil Hole Wrench x 1 Dotting Gloves x 1 Safety Goggles x 1 Instruction Manual x 1