3 PCS M35 Cobalt Step Drill Bit Set with TiAlN Coating, 1/4" Hex Shank Impact Ready, 1/8" to 7/8" HSS-Co Multi-Hole Unibit with Dual-Spiral Flute for Stainless Steel, Metal, HVAC, Electrical
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Product details
| Management number | 215637107 | Release Date | 2026/04/12 | List Price | US$15.20 | Model Number | 215637107 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
- 【M35 COBALT & TiAlN THERMAL SHIELD】 Crafted from industrial-grade M35 Cobalt High-Speed Steel (HSS-Co) and fortified with a premium TiAlN coating. This combination withstands extreme heat up to 800°C, providing significantly longer tool life when drilling through tough materials like stainless steel and cast iron compared to standard bits.
- 【UNIVERSAL 1/4" HEX SHANK】 Featuring a standard 1/4-inch hex shank that is "Impact Ready," allowing for quick changes and compatibility with impact drivers, electric drills, and drill presses. The hex design provides a non-slip, secure grip in the chuck, ensuring maximum torque transfer for heavy-duty tasks.
- 【DUAL-SPIRAL FLUTE EFFICIENCY】 The advanced dual-spiral flute geometry clears metal chips 2x faster than traditional straight flutes. This efficient debris evacuation prevents clogging and minimizes friction, ensuring a smoother, cooler cutting process that protects the bit from overheating and dulling.
- 【3-PIECE VERSATILE ASSORTMENT】 This professional set includes 3 distinct bits covering a diameter range from 1/8" to 7/8" (Bit #1: 1/8-1/2", Bit #2: 3/16-1/2", Bit #3: 3/16-7/8"). With over 30 individual step sizes, you have the exact tool needed for HVAC, electrical, and automotive maintenance.
- 【LASER-ETCHED SIZE PRECISION】 Each bit features permanent, high-contrast laser-etched markings inside the flute. Unlike painted-on sizes that wear off, these scales stay visible for the life of the tool, ensuring you always drill the exact hole size required with professional accuracy.
| Model | TM24380 |
|---|---|
| Brand Name | TUMAX |
| Shank Type | Hex |
| Unit Count | 3.0 Count |
| Finish Types | Titanium Aluminum Nitride |
| Manufacturer | tumax |
| Material Type | High Speed Steel (HSS) |
| Tool Flute Type | Spiral |
| Number of Flutes | 4 |
| Included Components | Step Drill Bit |
| Surface Recommendation | Aluminum, Metal, Plastic, Stainless Steel |
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