Product Name: Rb777 Jack Hammer, Used for Asphalt Paving Model NO.: RB777 Application Age: Adult Handle Color: OEM Size: Common Use Place: Mining and Construction Explosion-proof: Not Explosion-proof Handle Material: Steel Brand: GM Application: Pick Hammer Hammer Material: Stone Type: Jack Hammer Certificate: CE Color: Any Color Trademark: GM Transport Package: Wood Case and Cartons Specification: CE Origin: China Product Description RB777Jack Hammer,used for asphalt paving:Itis a ideal tool that break up concrete and other solid object in the road construction and installation. It has characteristic of simple structure, high efficiency and handy use. As long as fix a drill shank, turn on air source, then working.SpecificationWeight 37kgLength 733mmRammer dia 57mmRammer stroke 189mmAir pressure 0.63MpaImpact frequency 18.3HzAir consumption 34L/sAir pipe inner dia 19mm(3/4")Lubrication capacity 30mlShank size 32*152/160mm