... ,No-load speed: 800rmp Electric Hammer Drill Rotary Hammer Power Tools SpecificationsItem NO J1Z-DD-30Rated power1280WNo load speed 800RPMDrilling ... products as follow:Armatures and stator(produce them according to your instructions,sample,drawing)Electric drills(BLACK&DECKER10mm, 10mm,10mm, ... (180),Gear Wheels(produce them according to yourinstructions,samples). Power Tools 30mm Electric Hammer Drill