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🔧 Drill Smarter, Not Harder — The Ultimate Cobalt Set for the Ambitious Pro
The GMTOOLS 21-piece cobalt drill bit set features industrial-grade M35 high-speed steel with 5% cobalt for superior wear resistance. Its 135° split point tip delivers fast, precise penetration with reduced walking, while the twist jobber length design ensures efficient chip clearance. Suitable for drilling hardened metals, stainless steel, cast iron, plastic, and wood, this set includes a full range of sizes from 1/16" to 3/8" housed in a durable metal indexed case for easy organization and access.




























| ASIN | B0BWXGCJTM |
| Best Sellers Rank | #5,078 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Jobber Drill Bits |
| Brand Name | GMTOOLS |
| Customer Reviews | 4.4 4.4 out of 5 stars (81) |
| Cutting Angle String | 135 degrees |
| Cutting Diameter | 0.38 inches |
| Finish Types | Titanium |
| Included Components | drill bit |
| Manufacturer | GMTOOLS |
| Material Type | Cobalt Steel |
| Minimum Bore Diameter | 0.06 inches |
| Number of Flutes | 2 |
| Number of Packs | 1 |
| Number of Pieces | 21 |
| Part Number | 1 |
| Point Style | Split Point |
| Set Name | 21Pcs Cobalt Drill Bits Set |
| Shank Type | Round |
| Surface Recommendation | Cast Iron,Metal,Plastic,Stainless,Steel,Wood |
| Tool Flute Type | Spiral |
| Unit Count | 1 Count |
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