Gorilla Grind Drill Bits Pack of all 4 (SIZES - 7mm. 8mm, 10mm & 3/8")
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