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Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12) Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12) Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12) Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12)

Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12)

Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12) Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12) Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12) Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12)
$ 8.22

Score By Feature

Based on 2 ratings
Satisfaction
9.95
Value for money
10.07
Packaging
9.88
Delivery
9.80

OveReview Final Score

How Our Score Is Calculated

Product Description

By entering your model number, you can make sure that this fits.
Chip removal, coolant flow to the drill point, and heat dissipation are all improved by using a parabolic flute design.
Long-length drill bits, also known as taper length drill bits, have longer flutes and overall lengths than jobber drill bits, allowing them to drill deeper holes.
The 135-degree radius split-point is self-centering, reduces walking, is good for hard materials, and lowers cutting edge pressure.
Uncoated (bright) finish, cost-effective, and adaptable to a variety of drilling materials.
HSS is a high-speed steel that can be used on a wide range of materials.

Questions & Answers

What is the duration of the project?

Thank you for reaching out to us with your query. The overall length of the QC91P (part number 057905) is 3 3/4 inches, with a flute length of 2 inches.

Selected User Reviews For Precision Twist QC91P High Speed Steel Long Length Drill Bit, Uncoated (Bright) Finish, Round Shank, Parabolic Flute, 135 Degree Point Angle, 1 (Pack of 12)

I was able to cut my drilling time in half because I had over 500 aluminum rings to drill, each of which received three holes
5/5

They have holes drilled in them that are 078" in diameter. Each hole measured more than 1/2" in depth. Initially, I pecked away with a standard drill bit, which made the process tedious. Drill bits with "Parabolic" flutes appeared to be an option after reading about how to drill aluminum more efficiently. I'm happy to report that these drill bits revolutionized my job after drilling the last 900 holes with just one drill bit (no more jamming, clogging, or breaking bits)! Thank you so much for helping me finish the rings in such a short amount of time!.

Anders SLATER
Anders SLATER
| Jan 17, 2021
I'm not sure how long it'll last if it's used frequently, but it appears to work well for occasional use
5/5

I was able to use it to drill pilot holes, and it performed admirably. I'm not sure how long it'll last if it's used frequently, but it appears to work well for occasional use.

Capri MAHMOOD
Capri MAHMOOD
| Sep 17, 2021

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