Lasts up to 3 times longer than standard drills - drilling through reinforced concrete is a tough task that puts a lot of strain on drills. Standard bits with two cutting edges get stuck in the material and break. The fully carbide head on the Expert SDS plus-7X is an innovative 4-cutter design made from a single piece of the hardest metal: It does not jam and shows no weakness during percussion drilling. Thanks to Bosch Carbide technology and the fully carbide head, the Expert SDS plus-7X lasts much longer than standard hammer drills. It effectively penetrates through the material, so there is no need to stop, re-aim, or replace the bit when encountering steel. For construction professionals who regularly drill through concrete and reinforced concrete, for example for holes and installations. The Bosch Expert SDS plus-7X hammer bit offers unparalleled performance, reliability, and durability. It is the expert accessory for SDS plus rotary hammers. Suitable for all SDS plus rotary hammers.