Tamiya Mini 4WD Roller Stopper (Pink) - 3Racing M4WD-11/PK
Shower Door Roller Stopper Set of 4 | Fruugo NO
Car Stopper / Wheel Stopper
Chain roller-stopper with tensioner
Wheel Stopper - Basepoint Trade Supplies Depot
Amazon.com: ZEKOO 2PCS Barn Door Stopper for Sliding Barn Door Flat Track, Barn Door Roller Stopper, (Fit for Track: Width: 1-9/16'' , Thickness: 1/4'') : Tools & Home Improvement