Overview
These professional quality carbide tipped bits are designed to drill flat-bottomed holes. Use with a drill press, or with a hand drill and our exclusive JIG IT® Drill Guide. All Forstner bits have a 3/8" diameter shank and require a 3/8" stop collar if used with the JIG IT Drill Guide. These long shanks are 3-7/8" long.
Technical Details:
Technical Details:
- Bits feature carbide tips for enhanced durability
- Designed with spiraled flutes to allow for fast chip removal
- Long shanks are 3-7/8" long
- All bits have a 3/8" diameter shank
Tech Spec
Reviews
Customer Reviews
2 Review(s)
View AllI've used a lot of Forstner...
Posted August 23, 2013
I've used a lot of Forstner bits over years, and these are without a doubt the best I've used. They cut fast and clean, stay sharp, and are really a joy to use. It's hard to get excited about a drill bit, but you will about these! Incidentally, a piece of carbide cracked off on one of the bits after about 10 months of use, and Rockler replaced the bit with no problems. Great bit, great customer service - what more can you ask?!
Undersize Forstner Bit
Posted April 10, 2014
I purchased 91904. What I thought was a 2" dia. Turned out to be 1.969 diameter, 1/32" too small. Had to turn down the diameter of mating part. Time consuming and annoying!
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