Feature(may vary by option.)

●Bearings
●Dimensions: 608, 8x22x7mm (Inner Diameter: 8mm, Outer Diameter: 22mm, Width:7mm)
●Material: Chrome steel(Gcr15) rings + Si3N4 Ceramic 7 balls
●Retainer Seal Nylon cage Blue Pom seals
●Impact Load: 170kg~230kg

[10pcs 608 Si3n4 7ball]

Description

Bearings
Features:
1. Precise and High Speed 7 beads design,more stalbe and stronger supporting ability
2. Double side more Dust-proof
3. Excellent for professional speed Skating competition!
4. Self-lubricate si3n4 ceramic beads, longer life.
Fit for: Inline roller skates, speed skating competition, double rocker, longboard, skateboard , drift board, fidget spinner,single roller skates, 3d printer.