608-2rs bearing dimensions

As used in this part, “nunchaku” means an instrument consisting of two or more sticks, clubs, bars, or rods to be used as handles, connected by a rope, cord, wire, or chain, in the design of a weapon used in connection with the practice of a system of self-defense such as karate.

608-2RS Sealed Ball Bearing Si3N4 Ceramic Balls 8mm x 22mm x 7mm 608-2RS Sealed Ball Bearing, Bearing with Ceramic Balls with Rubber sealed, balls are made of Ceramic Si3N4 (Silicon Nitride), each bearing has 2 Rubber seal to protect the bearing from dust or any possible contamination, bearing is self lubricated.