ブランド：PRIMITIVE(プリミティブ)。 PREMIUM STEEL BALL BEARINGS ・NYLON CAGES FOR REDUCED WEIGHT AND FRICTION ・DEEP GROOVE DESIGN TO WITHSTAND HIGHER IMPACT ・DUST-RESISTANT, FRICTIONLESS, REMOVABLE SHEILDS ・LUBRICATED WITH LOW-FISCOSITY, NON-CORROSIVE OIL ・8MM (BORE DIAMETER) X 22MM X 7MM
