In drill bits with ⌀ 3 and 4 mm is supplied with round shank Drill Bit Sets, Concrete and Masonry Drill Bits & Accessories | Milwaee Tool Concrete Drill Bits Milwaukee 6mm X 150mm Premium Concrete Drill Bit. Milwaukee 4932471176 Milwaukee Concrete Drill Bit Milwaukee SDS-Max Core Bit maximizes energy transfer and the thick wall core body is durable even in large hammers. Designed for use in rotary hammers From ?5mm the bits are supplied with a 3-sided shank to prevent skidding in the chuck. Milwaukee 4932471182 Stone and concrete drill bit 8x100mm ⌀ 3 & 4 mm the drills are supplied with a round shank. Red shank design to easily identify the drill in the user's toolbox. Tungsten carbide tipped (TCT) drills allow drilling in concrete, aerated concrete blocks, masonry, slate and granite Tungsten Carbide (TCT) pellet drill bits for drilling on concrete, brick, masonry, granite, natural stone and slabs.