Holds up to three times longer than standard drill bits. Drilling through reinforced concrete is a challenging task that demands a lot from hammer drills. Even 4-cutter bits wear out quickly. Changing accessories and purchasing consumables can lead to downtime. The full carbide head on the Expert SDS max-8x is an advanced 4-cutter 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, the Expert SDS max-8x lasts significantly longer than standard hammer drill bits. It effectively penetrates rebar, so you won't need to stop, re-aim, or change the bit when you hit steel. Ideal for construction professionals who regularly drill into concrete and reinforced concrete, for example, for heavy anchors or rebar extensions. The Bosch Expert SDS max-8x hammer drill bit offers unmatched performance, reliability, and durability. It is the expert accessory for SDS max rotary hammers. Diameter (D) mm: 12.00, Working length (L1) mm: 400, Total length (L2) mm: 540.