... .22mm double function rotary hammer power tools 4.Power:600W Strong Power Rotary Hammer,drillCertificate: Certificate of CCC ISO9001 certificate Delivery ... clutch, powerful motor, thoughtful design of light weight, compact and well balanced design, speed control switch, comfortable auxiliary handle, along with ... -870r/minPackage:5PCS/CTNG.W:3.9kgN.W:2.7kg Strong Power Rotary Hammer