Capacity Concrete: Low – 18mm(11/16″) High – 10mm(3/8″) Steel: Low – 13mm(1/2″) High – 8mm(5/16″)· Power Input 640W· No-Load Speed 1,050/1,800/min.· Full-Load Impact Rate 17,800/28,600/min· Overall Length 340mm(13-3/8″)· Weight 2.3kg(5.1 lbs.)· Standard Accessories 1 Chuck Wrench, 1 Slide Handle, 1 Stopper.