Home > Jobber Drill Bits > 1/2" Dia. 5" OAL HSS Twist Drill Bit, General Purpose, 3-Flat Shank, Black and Gold Finished, 135 Degree Split Point, Ideal for Steel/Wood/Copper/Aluminum/Zinc Alloy/Plastic. (2-Piece) ; Visit the JEFE HEX Store
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Jobber Drill Bits
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About JEFE HEX 1/2" Dia. 5" OAL HSS Twist Drill Bit
Overall Feedback:
84% positive
83% appreciated its precise drilling accuracy
The cobalt bits are sharp right out of the box and of great quality.
78% praised for its fast drilling speed, while 22% found it slow
I was drilling at a speed of about 300rpm.
I had to switch to the second bit after drilling 4 holes, indicating that the drilling speed is slow.
81% liked the comfortable grip design, while 19% found it slippery
The bits drilled as expected and held up well. The quality is great and they are sharp. However, there is no information on the ergonomics of jobber-drill-bits.
The second bit bound up and ripped the drill from my hands.
82% praised for its versatility in drilling various materials
I have used the drill bits to drill in wood, aluminum and mild steel without any issue.
The drill bits cut away the material in perfect little curly-cue spirals, indicating high accuracy.
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