Woodworking Shaper Insert Rings for Powermatic 26, 27

Powermatic 26 and 27 are vintage spindle shapers that are highly sought after by professionals woodworking shops and hobbyists. However, the tabletop insert rings of the spindle are often missing from these machines.  

The list is the insert rings, manufactured by WGM Tool Works, to replace the stock parts. These rings are made of carbon steel, instead of cheap aluminum. They fit Powermatic 26 and 27 shapers. 

The outer ring has an OD of 4.2" and a height of 0.375", while the inner ring's OD is ~2.95". 

The list is for a pair including an outer ring and an inner ring.

Note that a fixed ring fastened by bolts on the tabletop is not included in this listing, but can be purchased here:

https://www.ebay.com/itm/275730897954