No-load Speed:930r/min Drill Bits & Chisel Shank Max Diameter. Drill Bits & Chisel Shank Type. The electric hammer and the electric switch are. Are suitable for different scenes.The three-dimensional cooling system has good ventilation and more stable motor performance. With strong power, high temperature resistance and long life. 30S quickly breaks the wall, the steel chuck, the drill bit is not easy to fall off. For easy use at different angles. Please allow a bit error due to manual measurement. The color may have different as the difference display, please understand. 1 x Impact Electric Hammer 2 x Carbon Brush 1 Pair Of Gloves. The item "2200W Demolition Rotary Jack Hammer Impact Drill Electric Concrete Breaker" is in sale since Wednesday, February 26, 2020. This item is in the category "Business & Industrial\Light Equipment & Tools\Drills & Hammers\Hammer Drills". The seller is "plmew2016_6" and is located in Shenzhen. This item can be shipped worldwide.