When you hold a single bearing with your fingers and spin it like a hand spinner, it will continue to rotate for about 7 seconds. New, unused. One winning bid gets you 8 bearings. The metal part is cool black and rust-proofed. "abec11" is not a standard that is met, but a name for the rotational image. Standard: 608 size Size: Outer diameter 22mm, Inner diameter 8mm, Thickness 7mm Compatible with Ripstick & Skateboard, Dry type, 608 size, 608RS