For free to contact Elaine: elaineliu318@yahoo.com.cn SL80 JACK HAMMER The pneumatic pick is suitable for drilling in concrete and clay,destorying hard or frozen stratum and other functions. It has characteristic of reasonable structure,high efficiency and handy use . Specification Weight 37kg Length 733mm Rammer dia 57mm Rammer stroke 189mm Air pressure 0.63Mpa Impact frequency 18.3Hz Air consumption 34L/s Air pipe inner dia 19mm Lubrication capacity 30ml