Powerland PDR80 11.8-inch x 12.2-inch 6.5 HP OHV 4-Stroke Gas Powered Landscaping Power Tamper/Rammer Ramming force 2248 lbs and Leap height 1.5-2.36 inches Ramming plate size 11.8 X 12.2 inches Advancing speed 32-42 ft/min Ramming frequency 450-650 times per minute Powerful 6.5 HP air cooled OHV engine with recoil start provides fast starting on the job and delivers high compaction force. Wheel kit included