No names or markings on the roller. It is a tandem, adjustable roller. The wheels are metal. The wheel diameter is approx. 1 inch. Width is approx. 5/8 inch. The height is approx. 1 1/4 inches, but adjusts to 1 3/4 inches.
Casey from SWISCO responded:
January 28, 2022
Hello,
Take a look and compare the dimensions listed on the 81-056 roller product page to your assembly. Thanks for posting!