40 mm Nylon Roller Wheel Plastic Bearing CNC Guiding Wheel Flat Belt Idler | eBay
10PCS 608zz 6000zz 6002zz bearing coated with plastic POM pa Nylon round type guide nonstandard wheel roller 23/38/30/36/35mm _ - AliExpress Mobile
10PCS 608zz 6000zz 6002zz bearing coated with plastic POM pa Nylon round type guide nonstandard wheel roller 23/38/30/36/35mm _ - AliExpress Mobile
Amazon.com: Letool 4pcs U type groove pulley nylon Guide Pulley Rolling Bearing U Groove Roller Wheel 8x40x20mm for Driving Mechanical Equipment, or Used in Doors and Windows : Industrial & Scientific
10x Frictionless Skateboard Ball Bearing Skates Inline 608-zz Wheel Roller Parts - Scooter Parts & Accessories - AliExpress
PWTR17-2RS-XL Track Rollers Bearing Cam Follower with Cylindrical Roller Set with 2 Rubber Seal – VXB Ball Bearings
40mm 608zz U Groove Pulley Wheel for Slding Door Roller - China Hardware, Roller Wheel | Made-in-China.com