6-Piece HSS Hex Shank Drill Bit Set, 5 681012 1/4" Adjustable Hole Woodworking Tool with Hex Key, Screw Boring Drill Bit for Wood, Plastic, Soft Metal

Multiple sizes: The HSS drill bit set includes 5 twist drill bits in 5 different sizes, #5 #6 #8 #10 #12 and 1 hex key. With numbers on the drill bits for easy identification, you can meet your various needs.

Quality Material: Each cutter is made of heat-treated steel for durable and repeatable performance with easily replaceable HSS (high-speed steel) drill bits, including #5/#6/#8/#10/#12 head diameter and hex shank.

Practical Design: The countersink drill bit set has an automatic start point and a five-flute design to eliminate vibration, ensuring smooth operation and clean, precise, and burr-free cuts.

Easy to Use: Adjustable countersink depth with a hex key; the drilling length can be adjusted for different screw lengths simply by loosening and tightening the adjustment screw.

Wide Applications: The countersink drill bit set provides a clean and fast cut through wood boards, plastic, and other materials. soft metals, plywood, aluminum, particle board, and much more. Furthermore, the bits are compatible with power tools, impact drivers, and countersink drills.