3x faster than a standard concrete grinding head - Grinding large concrete surfaces has always been a time-consuming job, and therefore expensive. The EXPERT Concrete is faster than even a benchmark Bosch diamond grinding head: It achieves this thanks to its integration of Diamond Technology with the latest design innovations. The dust accumulation in conventional grinding heads for concrete prevents them working to their full efficiency: The L-shaped grinding segments on the EXPERT head are optimised for effective removal of surface material. This material is immediately fed into the large slots, which ensure fast dust extraction. For anyone who needs to grind large concrete surfaces, the Bosch EXPERT Concrete Grinding Head will save time and money, while producing a highly professional result. With 22.23 mm bore for concrete grinders and angle grinders with locking nut. Features and Benefits • 3x faster than a standard concrete grinding head • Very fast grinding with Bosch Diamond T