Review on 🔍 High-Precision Drill Bit: Drill America MMO1 32 4FSE Polished - Ideal for Accurate Drilling by Joe Kokenge

It's hard to find a 3/16 inch long end mill or a shank with the same diameter as the cutting face. That fits the bill. We have a selection of these tools for cutting round holes in rubber stoppers about 1 inch thick. Regular drill bits aren't designed to cut through the sidewalls of the rubber, so they just push it aside leaving a very rough cut. End mills work much better and this one is perfect for small 3/16" holes.