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RENYU 5pcs Cobalt Spot Weld Drill Bit Set, 5/16-inch, Titanium Coated
✅ In stock
F
Grade
Analysis Confidence
73%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Nov 12, 2026 9:20 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price is slightly above the going rate for this product — worth watching for a drop.
- 📉It has been quite a while since a more competitive price was available, lending today's offer solid comparative value.
- 📈Prices have been moving higher lately — waiting risks paying more if that momentum continues.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
RENYu
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓ADVANCED M35 COBALT HSS WITH MULTI-LAYER COATING Our spot weld drill bit set is forged from professional-grade M35 high-speed steel (HSS) with 5% cobalt content. The upgraded industrial coating combines a TiAlN base layer plus an outer black aluminum nitride (AlNi) layer – significantly boosting surface hardness, reducing friction heat, and extending bit life even when drilling repeatedly into high-strength automotive steel.
✓VERSATILE FOR AUTO BODY & METAL REPAIR Works effectively on a wide range of materials including car body steel, aluminum panels, and other common metals. Ideal for collision repair, panel replacement, rust repair on floor pans, quarter panels, rocker panels, and general automotive sheet metal spot weld removal. One tool for professional mechanics and serious DIYers.
✓PRECISE APPLICATION FOR MULTIPLE REPAIR SCENARIOS Engineered for A‑pillar solder joint removal, mechanical plate positioning drilling, general spot weld cutting, and automotive sheet metal weld removal. The sharp spur point and spring-loaded centering tip prevent bit walking, delivering clean cuts without burrs or damaging the second panel – no need for secondary weld cleanup.
✓FAST & EFFICIENT WITH PLATE PROTECTION Removes spot welds quickly without twisting or distorting metal plates. The unique flute design clears chips efficiently, reduces heat buildup, and saves you significant time and effort during car repair, frame straightening, or rust restoration projects.
✓COMPLETE 5‑PIECE 5/16" KIT WITH ETCHED SIZES Includes 5 pieces of 5/16 inch (8mm) cobalt spot weld drill bits, Each bit features permanently etched size markings for easy identification, so you can grab the right bit instantly during your repair project.
⚙️ Specifications
Material
Cobalt Steel
Cutting Diameter
8 millimeters
Finish Type
Black Oxide
Shank Type
Straight
Brand
RENYU
Tool Flute Type
Spiral
Surface Recommendation
Metal
Number of Flutes
2
Set Name
5-piece set
Unit Count
5 Count
Manufacturer
RENYU
