Makita Drill Bits & Parts Hammer drill bit 632901 - Makita D-33875, The Makita D-33875 hammer drill bit is 12 mm in diameter and 340 mm in length, designed for use with SDS-Max systems. Manufactured by Makita, this robust stone and masonry drill bit is ideal for drilling into brickwork and stone. It offers reliable performance for heavy-duty applications. Makita D-33875 Hammer Drill Bit 12mm 340mm SDS-Max 2-Cutter