4pce Counter Sink Bit Set made of S2 Alloy Steel adding to their durability and strength. 6, 8,10, and 12mm bits included in this pack. Ideal addition to any workman's toolbox. Range of sizes allows for versatile use of bits. Countersink cutter drill bits are designed to fit directly into manual, electric and cordless drill driver attachments and have hexagonal or round shanks. Countersink cutters are used to create a chamfer around the rim of a pilot hole enabling the head of a countersunk screw to sit flush. Countersink cutters can also be used to remove the burr left from a drilling or tapping operation.

Key features:

• 4 piece (6, 8, 10, and 12mm bits)
• Range of sizes
• Fit directly into manual, electric and cordless drills