Twofers - 1/4-inch 100/120 regular grinder bit

These great little bits from Aanraku allow you to grind small inside curves with ease.

Twofers Grinder Bits offer superior quality at a low-cost. The diamond abrasive grinding surface is double plated for strength, durability and long life. It's large 18mm bit height gives you a larger grinding surface, designed to maximize bite and allows for the uniform grinding.