Wheel with center groove; steel housing; heat-treated, high tension steel spring; used as top and bottom roller. Spring Type: Wire-Spring. Roller Edge Type: Concave. Contents: 2 roller assemblies.
Wheel with center groove; steel housing; heat-treated, high tension steel spring; used as top and bottom roller. Spring Type: Wire-Spring. Roller Edge Type: Concave. Contents: 2 roller assemblies.