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SPKLINE Cobalt Jobber Length Stainless Cutting Tools for Industrial Drill Bits Review

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Average

Revainrating 3.5 out of 5  
Rating 
3.7
🪚 Industrial Drill Bits, 🔪 Cutting Tools

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Description of SPKLINE Cobalt Jobber Length Stainless Cutting Tools for Industrial Drill Bits

2 pcs 5/16" (7.9mm) cobalt drill bit set for precise hole drilling into various material. Total 118mm long with 75mm working length. Very tough drill bit for heavy duty work drilling into stainless steel, light-gauge metal, high-carbon steel, aluminum and alloy steel, cast iron, abrasive alloy metal, other hard metal and hardened steel. 4 times life time than normal metal drill bit when drilling into PCB board, plastic, wood, jewelry, sheet metal and normal steel. M35 Cobalt drill bits are made from industrial grade High Speed Steel with 5% cobalt alloy that is heat and abrasion-resistant. 135-degree split-point tip starts drilling immediately with less force and eliminates walking or skating across the work surface. Straight shank fits with electric and cordless power drill and rotary drill. Drill bits are packed in a plastic zip pouch that is convenient to carry and store.

Reviews

Global ratings 2
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Type of review

Revainrating 5 out of 5

Durable and efficient Industrial drill bit

This drill bit is perfect for heavy-duty tasks in an industrial and scientific setting .It is made from high-quality cobalt steel that ensures long-lasting durability and precision. The jobber length allows for versatile use in multiple applications guaranteeing efficiency. The only downside is that it can be slightly more expensive compared to other drill bits. Overall, this is a must-have tool in any industrial and scientific workplace..

Pros
  • Durable, high-quality stainless steel construction ensures long-lasting performance
Cons
  • Some users may find the cobalt material too hard and prone to breaking under heavy use

Revainrating 1 out of 5

Don't waste money!

These bits worked fine initially. Using these coupled with cutting fluid, I drilled through my RV's chassis to install leveling bushings. Pre-drill pilot holes before switching to these bits. The first hole went very smoothly, but the second hole was about halfway through (mind you, I was drilling 1/4" steel) when the drill suddenly broke right above the chuck. The other half of the bit went out of frame. The second bat went through most of the work when part of the bat was shaved off like…

Pros
  • Power tool parts and accessories
Cons
  • You could choose a newer model