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. Downtime occurs when changing accessories and purchasing consumables. 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 doesn’t jam and shows no weakness during hammer drilling. Thanks to Bosch Carbide Technology and the full carbide head, the Expert SDS max-8x lasts significantly longer than standard hammer drill bits. It effectively penetrates rebar, so you don’t have to stop, re-aim, or change the bit when you hit steel. For construction professionals who regularly drill into concrete and reinforced concrete, such as for heavy anchors or rebar extensions. The Bosch Expert SDS max-8x hammer drill offers unparalleled performance, reliability, and durability. It is the expert accessory for SDS max rotary hammers. Diameter (D) mm: 18.00, Working length (L1) mm: 400, Total length (L2) mm: 540.