These 8mm (0.31 inches) ball bearings are a great fit for 8mm (0.31 inches) rods. They come in a set of 10, offering excellent value. The 688zz model features an 8mm (0.31 inches) inner diameter, a 16mm (0.63 inches) outer diameter, and a 5mm (0.20 inches) width, making them versatile for various applications.
Using these ball bearings is easy. Simply slide them onto your 8mm rods. When handling, make sure to keep them clean to avoid dirt and debris getting inside. For maintenance, you can gently wipe them with a dry cloth every once in a while. Avoid exposing them to excessive moisture or extreme temperatures as this can affect their performance. If you notice any unusual noise or movement, it might be time to check if they need replacement.
