Factory Cheap Hot 16v Cordelss Polisher - 20V Cordless Rotary Hammer TKDR09 – Tiankon

20V Cordless Rotary Hammer      Model:TKDR09                       
No load speed: 900rpm
Hammer power:1.1joule
Impact rate:0-4300bpm
concrete:10mm
wood:16mm
steel:8mm
vaviable speed:yes