Better Tools Make It Professional : Heavy duty material & structure pass 1m drop test with no functional issue. Professional grade. This rotary hammer provides a powerful 12.5 AMP motor. 5.5 joules impact energy for fast drilling and chipping speed Full Function : 4 Functions (Hammer Drilling, Hammer, Drilling, Chisel Adjust), 5 SDS-PLUS Bits, 360° Rotatable Handle, Variable Speed Control, Shock Absorber, Replaceable Carbon Brush, Dust Collector... Got all you need at one time Drilling Capacity : The max drilling diameter for concrete is 1 inch and for steel is 1/2 inch. This rotary hammer drill can reach 1150 RPM no-load speed and 5100 BPM max impact frequency. The SDS-Plus chuck allows for easy and secure bit changes to keep your project going Human & Environment : Hand-friendly body and ergonomic design upgrade your user experience. Materials comply with environmental protection, all products will be tested for heavy metals and chemicals, the total content of three o-phenols less than 1000 ppm Trusted Quality : Manufactured by a globally recognized tool supplier, ensuring consistent performance and reliability WORKPRO Premium SDS-Plus 12.5A Rotary Hammer Drill, Heavy Duty Corded Version for Concrete Demolition Chipping Rotomartillo, 5 SDS-Plus Bits