Ball transfer unit, 38.1 mm, with mounting holes and Nylon ball, for under cupboard, Ball-transfer-units.com
Set of 8pcs Mini Nylon Ball Transfer Bearing Unit Table Conveyor Roller Ball for Transmission, Furniture, Wheelchair: Amazon.com: Industrial & Scientific
Ernie Ball 3409 Ernesto Palla Black Nylon Ball End Classical Strings 3-Pack
Blue Nylon Ball Retainers | 0.316" I.D.
LP Series Pulley, Molybdenum Disulfide Nylon, Ball Bearing | Sava
Leviton 1-Gang Midway Duplex Outlet Nylon Wall Plate, White R62-00PJ8-00W - The Home Depot
Leviton Decora 1-Gang Midway Nylon Wall Plate, Light Almond (10-Pack) M56-0PJ26-0TM - The Home Depot