Lasts up to 3 times longer than standard drill bits - Drilling through reinforced concrete is a difficult task that demands a lot from drill bits. Normal drill bits with two cutting edges get stuck in the reinforcement and break off. The full carbide head on the Expert SDS plus-7X is an advanced 4-cutter made from a single piece of the hardest metal: it does not jam and shows no weakness when impact drilling. Thanks to Bosch Carbide Technology and the full carbide head, the Expert SDS plus-7X lasts far longer than normal hammer drill bits. It effectively penetrates the reinforcement so you don't have to stop, re-aim or change the drill bit when you hit steel. For construction professionals who regularly drill into concrete and reinforced concrete, for example for drilling and installations. The Bosch Expert SDS plus-7X hammer drill bit offers unrivalled performance, reliability and durability. It is THE expert accessory for SDS plus rotary hammers. Suitable for all SDS plus rotary hammers. Diameter (D) mm: 10.00, working length (L1) mm: 250, total length (L2) mm: 315.