Contact-O-Max Sr 5"x5" No Hub Nylon Roller | Hog Slat
DURA-LIFT Ultra-life max 2-in dual cage, sealed 6200ZZ bearing 10-Pack Gold Nylon Garage Door Roller in the Garage Door Parts & Hardware department at Lowes.com
TS Distributors | Nylon Roller Guide
2 Inch Nylon Roller Wheel with Bearings, CNC Guiding Wheel Flat Belt Idler (1" Wide - 1/2" Bearing): Amazon.com: Industrial & Scientific
Nylon Wheels | Buy Industrial Wheels | UK Supplier