An R&M 9" plastic fondant roller (SKU 2782). Two sets of guide bands, 1/8" and 1/16"; slide a matching pair onto the roller. Official page lists fondant, gum paste, and dough. Non-stick. Top-rack dishwasher safe. Specs from R&M International (morethanbaking.com).
The 9" roller we keep with the fondant tools.