PH PandaHall 30 Sets Fidget Spinner Bearing with White Caps 3 Sizes Steel Bearing Balls Flat Round Small Bearings Ball Center Replacement Part Kit for Finger Craft DIY Projects Handmade, 13/15/21mm

["3 Sizes: Includes 3 different fidget spinner bearing sizes: 15x8mm, 15x12.5mm, and 21x12mm. These are compatible with various finger spinner designs and size requirements, allowing you to find the right bearing for installation or replacement","Package Includes: You will receive 30 sets of finger spinner bearings and caps, 10 sets per size, catering to various DIY or replacement needs for finger spinners. This ensures a smoother and more efficient creation process","Material: These fidget spinner bearing are constructed with a steel spin axis paired with plastic caps, enabling them to withstand frequent rotational use without damage and ensuring stable rotational performance","Creative Crafting: Combine bearings of various sizes with other materials according to your preferences and creativity to craft one-of-a-kind finger spinners. Spark innovative thinking and enjoy the fun of creation","Widely Used: Not only suitable for bearing fabrication and replacement in finger spinners, but also applicable to craft devices, model making, and various DIY scenarios, offering flexible adaptation to different structural requirements"]