Listed is a 3-Piece Set of Norton 6x3/4x1 (Bushings included to go down to 1/2" hole) Bench Grinding Wheels.

In this offering, you will receive the following Norton Bench Grinding Wheels

1) 6x3/4x1  36-grit Aluminum Oxide Grinding Wheel

1) 6x3/4x1  60-grit Aluminum Oxide Grinding Wheel

1) 6X3/4X1 60-grit Silicon Carbide Grinding Wheel

The Aluminum Oxide Wheels are a good choice for all general purpose bench and pedestal applications

The Silicon Carbide Wheel is good for general purpose bench and pedestal applications on nonferrous materials and carbide tooling

Wheels come with a set of bushings that will bush down the hole to a 1/2"