The Bosch GBH 3-28 DFR SDS-Plus Professional Rotary Hammer comes with a keyless chuck for round shaft drill bits and a quick-change chuck (SDS plus). It also includes a powerful motor, reverse mode, rotation control clutch, variable speed, and Vario-Lock. The compact housing enables multiple applications in narrow and tight workspaces. Designed for convenience, its L-shaped design provides a balanced weight distribution, while its Vibration Control allows effortless continuous work. This tool is intended for drilling and light chiselling in concrete, masonry, wood, and metal. It is compatible with various dust attachments. Supplied with: 1 x Quick Change Chuck 13mm, 1 x SDS-Plus Quick-change Chuck, 1 x Auxiliary Handle, 1 x Depth Stop 210mm and 1 x Carrying Case. Specifications: Tool Holder: SDS-Plus.Input Power: 800W.Impact Rate: 0-4,000/bpm.Impact Energy: 3.1 Joules.Drilling Diameter: Concrete, Hammer Drill Bits 4-28mm, Opt. Appl. Range Concrete, Hammer Drill Bits 12-18mm, Metal