For your own safety, please read the manual carefully before using and strictly comply with the rules of "Precautions". Correct using and proper maintenance methods can increase its lifespan. POWERFUL MOTOR: Equipped with a robust 1500W (13 Amp) motor, this rotary hammer delivers 0-950 RPM and 0-4350 BPM with 4.43 ft.lbs. (6 Joules) of impact energy, making it perfect for drilling and chipping through concrete, brick, masonry, cement, and other tough materials. Whether you're a professional contractor or a DIY enthusiast, this tool ensures fast, efficient, and reliable performance for all your heavy-duty tasks. EASY TO OPERATE: Easily switch between 4 modes with the rotating dial: "Drilling with hammering" (for drilling wood/metal), "Rotation with hammering" (for heavy duty work), "Hammer Only" (for concrete or brick), and chisel position adjustment adapt to variety of work scenarios which are easy to switch. This versatility allows you to tackle a wide range of tasks—drilling, grooving, breaking, and more—without needing multiple tools. 360° ADJUSTABLE AUXILIARY HANDLE: The 360° rotatable auxiliary handle provides multi-directional operation flexibility, ensuring comfort, stability, and precision in tight or complex spaces. Whether you're working overhead or in narrow corners, this feature reduces fatigue and improves control, making it ideal for professional-grade projects. PACKAGE INCLUDE: Rotary hammer *1; SDS-Plus drill bits（8mm,10mm,12mm）*3; SDS-Plus 10-inch chisels*2; Auxiliary handle*1； Replaceable carbon brush 1 set; Grease*1； Spanner*1； Dust proof cap*1； Carrying Case*1; User Manual*1. The Prostormer 1-1/4 Inch SDS-Plus Rotary Hammer Drill is a 13 Amp heavy-duty powerhouse designed for professionals and DIY enthusiasts alike. Equipped with a 1500W motor, it delivers 0-950 RPM and 0-4350 BPM with 4.43 ft.lbs. of impact energy, making it perfect for drilling and chipping through concrete, brick, masonry, steel, and wood.