Weighs 45 pounds, it offers 1,850 beats-per-minute and it is powered by 1.3 HP, Honda 4-stroke engine. A 100 % self-contained. High-quality sealed bearings and Viton O-rings for long tool life. The internal dampener springs to lessen vibration to the operator, the handles are designed for comfort. Simple recoil pull start with trigger throttle and integrated stop button. It has a limited lifetime warranty on the hammer 3-1/4" barrel. It accepts posts from 2" to 3-1/8" in diameter. 2" adapter sleeve included for 1" to 2" posts.