Application: The bearing is Si3N4 black ceramic bead suit for professional speed skating.
7-beads design with excellent stability and never deformed; the ring is GC415 Chrome steel stainless and strengthen.
وصف
Bearings
Material: Si3N4 Black Ceramic
Beads: 7-beads
Application: Speed Race
Size: 8*22*7mm
the bearing is Si3N4 black ceramic bead suit for professional speed skating;
7-beads design with excellent stability and never deformed;
the ring is GC415 Chrome steel stainless and strengthen;