SVST Pro Edge Beveler Adaptors Machined aluminum, 1, 2, and 3 degree shims perfectly fit all SVST Pro Edge Bevelers. Allow you to add corresponding degree of bevel to existing angle of any standard Pro Edge Bevelers while maintaining complete accuracy. Can be purchased separately or in a kit which includes a 1, 2, and 3 degree shim with the PEBS90 Pro Edge Beveler and roll bag giving you the flexibility of 4 distinct degrees of bevel without having to purchase 4 separate Pro Edge Bevelers.