S SIENOC 10 x 624zz Kugellager Miniatur Rillenkugellager 4 x 13 x 5mm Bearing Stahl Speed (624zz, 10) : Amazon.de: Gewerbe, Industrie & Wissenschaft
MroMax U-Shape Groove Wheel-5x24x7mm Sliding Conveyor Nylon Wheel with 625 Bearing for Furniture, Hardware Accessories and Mobile Door Transparent White 4Pcs: Amazon.com: Industrial & Scientific