Lasts up to 3 times longer than standard drill bits – Drilling through reinforced concrete is a challenging task that places heavy demands on drill bits. Standard drill bits with two cutting edges get stuck in the reinforcement and snap. The solid carbide head on the Expert SDS plus-7X is an advanced 4-flute design made from a single piece of the hardest metal: it does not jam and shows no weakness during hammer drilling. Thanks to Bosch Carbide Technology and the solid carbide tip, the Expert SDS plus-7X lasts far longer than standard hammer drill bits. It cuts effectively through reinforcement, so you don’t have to stop, re-aim or change the drill bit when you encounter 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 hammer drills. Suitable for all SDS plus hammer drills. Diameter (D) mm: 12.00, working length (L1) mm: 300, total length (L2) mm: 365.