Home > Jobber Drill Bits > Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic, with Index Storage Case, 1/16"-1/4" ; Visit the MACXCOIP Store
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15,192 reviews
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Jobber Drill Bits
Experiential insights by users
About MACXCOIP Cobalt Drill Bit Set, 13Pcs M35 High Speed Steel Jobber Length Drill Bit Kit
Overall Feedback:
80% positive
73% appreciated its precise drilling accuracy, though 27% experienced deviation
I found that the bits are accurate and can drill mild steel very well, but they do not perform well on carbon steel.
74% praised for its fast drilling speed, while 26% found it slow
I broke the drill bit in just 2 seconds of use and the other bits were too dull to cut anything.
75% liked its long-lasting durability, but 25% experienced frequent breakage
I have been using the drillbits for months without any problem related to snapping. Although I have read some complaints about people snapping their bits, I have not faced that problem personally.
I used the very first bit and it broke in just 2 seconds, indicating poor durability.
I tested the drill bits on thin mild steel and suggest that they should only be used on softer materials.
76% liked the comfortable grip design, while 24% found it slippery
I tried to use the drill bits to drill through a broken bolt. The bits are sharp but easy to break. I tried a couple of smaller sizes, but they all broke when I used them.
78% praised for its versatility in drilling various materials, though 22% had difficulty with metal
Cobalt is great for working with metal, but it can be brittle if not used properly.
I suggest using jobber-drill-bits on softer materials as they are not suitable for thin mild steel.
The drill bits listed as Cobalt Drill Bits Set, M35 HSS, 135 Degree Tip, Twist Jobber Length Drill Bit Kit for Hardened Metal, Cast Iron, Stainless Steel, Plastic and Wood were not suitable for steel, as I found out.
90% praised for its versatility in drilling various materials
Experiential insights by users
The drilling speed of jobber-drill-bits is not good because cobalt or titanium, which gives them their hardness, is expensive. Sets like this tend to have thin coatings that wear off quickly.
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