NiArt Fidget Spinner Toy DIY Bearing with Caps Set 24Pack MR137 05 SingleSealed Chrome Steel Bearing Balls Replacement High Speed 13mmx7mmx4mm Epoxy Resin Casting Craft Skateboard Stress Reliever

Package ContentsThis package includes 24pcs MR137 precision highspeed ball bearings with blue plastic seals and 24 pairs of ball bearing caps in black color diameter approx 21cm MR137 steel ball bearing size ID Inner Diameter 5mm OD Outer Diameter 13mm Thickness 4mm Premium QualityThe bearing is made of highquality stainless steel and plastic for durability and resistance to deformation under heavy loads The inner and outer races are machinepolished for smooth highspeed rolling This bearing provides higher speed precision and durability reducing replacement and maintenance costs Radial Ball BearingThe MR137 bearing is sealed on one side to keep contaminants such as dust and water from entering the equipment and keep it lubricated Stainlesssteel races ensure durability and corrosion resistance The singlerow radial ball bearing is suitable for applications with radial and axial loads Spinner Cap Wide ApplicationThe ABS plastic caps are lightweight durable and compatible with MR137 bearings With components that are easy to install and unload this bearing set can be used in a wide variety of applications Perfect for DIY projects such as fidget spinners and replacement parts in case your original cap or bearing is lost TroubleShooterIf you encounter any issues while using this product please contact us at any time We guarantee a 24hour resolution for all your concerns