Roller Assembly OLS# 112184 T601 Upper 60mm Concentric October 3, 2022 / Roller Assembly OLS# 112184 T601 Upper 60mm Concentric Product Details Additional Information Roller Diameter: 60 mm (2.36?) Pin Type: concentric Car Frame Model: T601 – Upper Roller (anodized finish) Original Date of Supply: January 2016 – Present