Gorilla Grind Drill Bits Pack of all 4 (SIZES - 7mm. 8mm, 10mm & 3/8mm)
PSI developed the Gorilla Grind to more easily drill the perfect hole in wood and acrylic pen blanks. These precision ground, highly polished bits have unique fluting that provides superior performance to traditional woodworking bits.
Drills acrylics without cracking, chipping or splitting
Provides a hole with clean entry and no tear-out
Cuts cooler, stays sharper and lasts longer than traditional bits
| Specification | Description |
| Style: | Brad Point |
| Hole Size: | Various |
| Type of Steel: | High Speed Steel |
| Shank Size: | Various |
| Projects Used On: | Various |
| Category: |
Drill Bits |
Average Customer Review: 



4 Reviews
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An Cost-effective SetThis kit has the 4 common sizes for pen blanks. The bits are well made, and run straight. I usually drill blanks on the lathe using a Jacob's chuck in the tail stock and a scroll chuck w/Pin jaws for the blank.




Gorilla Drill BitsI was really surprised when I received these drill bits. They are of excellent quality. Each bit comes in its own container.




Gorilla Drill BitsThese are very well made and "sharp" brad point bits. They drill into and through all types of pen making blanks with speed and accuracy. As with most other bits take time to periodically back up and allow the chips to be ejected. Overall I am very happy with these and will hopefully get many years of use out of them.




Nice bitsReally a great deal. The bits are wonderful to get the whole group instead of one at a time. I would recommend to the beginning turner to build your supplies.