Drill Set - It is compatible with SDS plus clamping systems or with hexagonal spindle systems. The SDS plus-9 CoreCutter hollow drill bit is ideal for drilling holes, especially when installing wiring boxes. It is made of highly durable fine-grained carbide, which ensures the best resistance to wear during drilling. In addition, the number of asymmetric carbide teeth of the crown is adapted to the diameter of the crown, and therefore the crown is an ideal choice when drilling holes for electrical installation boxes. The crown is designed for drilling in concrete, masonry and limestone. 82 x 54mm Diameter mm: 82 Depth of drill bit (L1) mm: 54 Working length (L2) mm: 72 Cutting, number: 6 Concrete | Concrete Stone | Masonry