5-Piece 4-Flute Step Drill Bit Set Hex Shank 6–12mm
5-Piece 4-Flute Step Drill Bit Set Hex Shank 6–12mm
5-Piece 4-Flute Step Drill Bit Set for Glass, Ceramic Tile & Hard Materials
Tackle tough drilling projects with confidence using this professional-grade 5-piece four-flute step drill bit set. Engineered from hard metal alloy and featuring an innovative eccentric step design, these bits deliver precise, clean holes in glass, ceramic tiles, concrete, brick, and more — all without water or constant bit swaps.
Key Features
- Four-Flute Cutting Design: Four precision cutting edges work together for faster penetration, cleaner holes, and reduced chipping on hard, brittle surfaces like glass and ceramic tile.
- Hard Metal Alloy Construction: Built to last with superior hardness up to 93.5 HRC, delivering exceptional wear resistance and long service life even under demanding use.
- Step Drill Design: The unique stepped profile allows you to drill multiple hole sizes with a single bit — no more stopping to swap bits mid-project.
- Dry Drilling Capability: Designed for direct dry drilling — no water or coolant required — on tiles, concrete, brick, and other hard materials.
- Universal Hex Shank: The standard hex shank fits securely in cordless drills, hand drills, and bench drills, ensuring stable, wobble-free operation.
Specifications
| Set Includes | 5 drill bits |
| Sizes | 6mm, 8mm, 10mm, 12mm (step sizes) |
| Flute Style | 4-Flute Eccentric Step |
| Material | Hard Metal Alloy |
| Shank Type | Hex Shank |
| Color | Purple |
| Compatible Materials | Glass, Ceramic Tile, Concrete, Brick, Hard Stone |
| Country of Origin | Made in China |
Package Contents
- 5 × 4-Flute Step Drill Bits (6mm, 8mm, 10mm, 12mm sizes)
Important Notes
- Actual color may vary slightly from product images due to monitor settings and lighting conditions.
- Please allow slight measurement tolerance due to manual measurement.
Learn More About Safe Power Tool Use
For best practices when working with power tools and drill bits, visit the OSHA Power Tools Safety Guide to ensure a safe working environment.
Frequently Asked Questions
Q: Can these 4-flute step drill bits be used on glass without cracking it?
A: Yes. The four-flute eccentric step design is specifically engineered to reduce chipping and cracking on brittle surfaces like glass and ceramic tile. For best results, apply steady, moderate pressure and allow the bit to work at a consistent speed without forcing it through the material.
Q: What drill types are compatible with these hex shank step drill bits?
A: These bits feature a standard hex shank that fits virtually any drill with a hex chuck or adapter, including cordless drills, hand drills, and bench/table drills. Simply insert the hex shank into the chuck and tighten for a secure, wobble-free fit.
Q: Do I need water or coolant when using these step drill bits on tile or concrete?
A: No. These hard metal alloy bits are rated for dry drilling, meaning you can drill directly into tiles, concrete, and brick without water or coolant. However, using intermittent drilling strokes and short pauses can help manage heat buildup during extended use.
Q: What sizes are included in this 5-piece step drill bit set?
A: The set includes 5 drill bits covering step sizes of 6mm, 8mm, 10mm, and 12mm, giving you the versatility to drill a range of hole sizes without needing to change bits — ideal for plumbing, electrical, and tile installation projects.