All carbide tipped for hammer drills with standard type chuck, 5/32", 3/16", 1/4", 5/16", 3/8", 1/2", 5/8", there are doubles of all except the 5/32" & 5/8", so 12 drills total $10, if you need a 3/4" add $5. More deals when you click on toolguy.