Features: brand new and high quality The inner diameter is 6.35mm High load, high speed, low noise Precision bearing, please do not add lubricating oil Suitable for fidget spinner, Yo Yo and other toys, can also be used in appropriate medica equipment, industrial equipment Please contact me if you have any questions.Thank You! WARNING:This product is not suitable for children under 3 years old because of small parts. Color: gold Material:High carbon chromium bearing steel Sales Way:Retail, Wholesal,Drop Shipping Size: One Size Length:1.27cm(0.5in) Width:1.27cm(0.5in) Height:0.476cm(0.19in) Quantity: 6PCS Note: If you have big quantity (only need over 50 dollars), please feel free to contact me, I will give you SURPRISED PRICE(The more the quantity, the lower the price), thanks! Size For Manual Measurement, there may be a 0 to 2 for cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: (Without retail package) 6 x Bearings