Specifications Item Model Number: JH-65 Engine Type: 4-Stroke Displacement: 37.7cc Included Piling Sleeve Diameters: 45mm, 55mm, 88mm 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: 1500-2000 BPM Impact Energy: 35J Main Materials: Die-cast Aluminum+ Steel+ Plastic Product Dimensions: 295 x 290 x 675 mm / 11.61 x 11.42 x 26.57 in Net Weight: 20.7 kg / 45.64 lbs Package Content Post Driver x 1 Plastic Sleeves x 3 (45/55/88mm, one is on the machine) Funnel x 1 Filter Screen x 1 Tool Set x 1 Measuring Cup x 1 Spark Plug x 1 Plastic Case x 1 Instruction Manual x 1