sds plus mx4 drill bits case 10 units milwaukee4 cut drill bit that drills through the material more efficiently. The 4 symmetrical cutting edges at 90 guarantee a circular hole for optimal anchor holding. Sharper angled tip ensures greater precision and performance 4 cut spiral ensures faster material removal Centering tip for easy drilling with millimeter precision With a welded solid tungsten carbide tip. Allows for greater space between the spirals and thus, better dust extraction and higher