Drill Bit Titanium Coated Hex Shank Step Drill bit set cone hole cutter

24 sizes individual drill bits in 3: This set includes three standard step drill bits that replace 28 individual drill bits, comes with one 4 to 12mm five-step bit, one 4 to 20mm nine-step bit, and one 3 to 12mm ten-step bit.

Strong durability: HSS + titanium durability.

Avoiding the inconvenience of a tri-flat shank to ensure a firm grip.

Easy drilling: Two-fluted design provides faster, smoother cutting.

Provided with small pressure and the sets can cut through wood, sheet metal, steel and other surfaces.

Automatic center punch: Delivers an automatic, high-impact, spring-loaded strike when pressed against surface, adjustable cap regulates striking force.

Wide usages: Mark hole locations and start drill bits and screws, preventing wandering, heat treated alloy steel punch with sharp precision tip, corrosion-resistant brass body with non-slip knurled grip.

This compact set replaces 24 individual drill bits in 3pc Step Drill Bits which includes one 4-12mm, one 4-20mm, and one 3-12mm.