Wide Applications - compatible with power screwdrivers, impact drivers, and other tools that accept 1/4" hex shanks, allowing for quick changing between multiple drill bits and bits with just one power tool;

Upgraded Structure - press in pin connection makes the bit and hex shank an integrated structure to break off during drilling, greatly reduced the risk of drill bit snapped off from the hex drive;

Eliminates Wobbling & Chatter - the final straighten process is added. which keep the bit in a straight line during rotation and reduce chatter;

Designed Bladepoint - these bits with a 135° split point keep centered without a pilot hole, full-ground drill faster with fewer . excellent chip removal and heat removal;

What you Get - combo set of 16 count, 13 commonly- sizes (1/16",5/64",3/32",7/64",1/8",9/64",5/32",11/64",3/16",13/64",7/32",15/64",1/4") to satisfy all needs, additional of 1/16", 5/64" and 3/32" for backup use. comes with a portable case with size index for easy select, storage and carry.