Old Style Spinalator Tables have a manual wheel on the outside to elevate the rollers. Newer Style Spinalator's have a rocker switch that controls the elevation of the rollers. 

If you have an old style table with the manual wheel elevation and roller mounting system, you will need to order the Old Style Roller Kit.

Foam Rollers - https://spinalator.com/products/spinalator-ist-tab...

Solid Plastic Rollers - https://spinalator.com/products/replacement-spinal...

The picture shows an oldest style Spinalator with manual roller elevation. It uses a very OLD 3 arm, mounting system.