Amazon.com : ENERTAI 608-2RS Ball Bearing(8PCS) - Double Rubber Sealed Miniature Deep Groove Ball Bearings for Motor,Skateboards, Inline Skates, Scooters (8mm x 22mm x 7mm) : Sports & Outdoors
Amazon.com : Tanzfrosch 8 Pack Roller Skate Wheels with Bearings Installed and 2 Toe Stoppers for Double Row Skating, Quad Skates and Skateboard Outdoor or Indoor Use, 32mm x 58mm 82A (Black) :
Kugellager 16 x 8 x 5 mm 688 ZZ = 2Z Rillenkugellager Lager Metallabschirmung : Amazon.de: Gewerbe, Industrie & Wissenschaft
Flanschkugellager F688zz Flansch Radialkugellager Kugellager 8x16 Metallstahl Doppeltes Abgeschirmtes Flansch kugellager 8 x 16 x 5 für Motor (10 Pcs) : Amazon.de: Gewerbe, Industrie & Wissenschaft