The SDS-Max MX4 drill bits are engineered for demanding concrete and reinforced steel applications, offering exceptional durability and precision. They feature a large carbide tip with patented rebar chamfers to reduce vibration and optimize drilling performance when hitting rebar, extending the bit’s life. The robust head geometry with 4 × 90° symmetry minimizes jamming on reinforced steel, while the centering point with a 130° angle ensures accurate spot drilling and guidance. A big, curved secondary cutter supports faster drilling, and shorter spiral windings efficiently transport dust from the head to the flute, reducing wear and heat buildup.