The Bosch GBH 12-52 DV SDS-Max Professional Rotary Hammer with a high-end motor producing the ultimate performance in SDS max applications. The rotary hammer's incredibly powerful motor enables 19 J of impact energy, which is perfect for tough chiselling. Other features include constant speed, restart protection, rotation control clutch, speed selection, and vibration control for effortless and continuous work in time-intensive applications. Designed for high durability, featuring extremely robust metal components. This tool is intended for drilling up to 52mm in diameter and heavy chiselling work in concrete and stone. It is compatible with various dust attachments. Supplied with: 1 x Auxiliary Handle, 1 x Grease Tube, 1 x Machine Cloth and 1 x Carrying Case. Specifications: Tool Holder: SDS-Max. Input Power: 1, 700W. Impact Rate: 1, 025-2, 100/bpm. Impact Energy: 19 Joules. Drilling Diameter: Concrete, Hammer Drill Bits 12-52mm, Opt. Appl. Range Concrete, Hammer Drill Bits 30-50mm, Concrete, Breakthrough Drill Bits 80mm, Concrete with Core Cutters 50-150mm. Weight: 11.9kg.