... ),Rilling capacity: 28mm 3),No-load speed: 1280rmp Electric Hammer Drill Rotary Hammer Power Tools Specifications Item NO J1Z-DD-28Rated power1280WNo load speed 800RPMDrilling ... , as well as 8 assembly lines. Our products as follow: Power tools as follow: Electric drills, Project drill, Electric Hammers, Electric breaker ...