The 1402 Small Wheel Attachment uses a 2" wide belt.  Wheels sizes from 9/16", 3/4", 1", 1.5"  can be used with this attachment.  

The 1402 comes standard with the AR2311 wheel which is 1" x 2"

Internal Grinding Attachments Convert Models 482, 760 and 1272 Grinders for Internal Grinding.

A variety of interchangeable wheel sizes are available to allow tight radius and internal grinding.