1X(These miniature are made of high steel and ceramic for low noise and long service life.
with ceramic balls is better resistant to corrosion and rarely require lubrication.
These 608 are specially designed for inline skate to speed.
The lighter balls allow the to spin faster, and uses less energy to maintain speed.

Inner Diameter: 8mm / 0.31inch
Outer Diameter: 22mm / 0.86inch
Thickness: 7mm / 0.27inch
Colour: black + white
Material: mixed materials

Contents:
16 * Bearings)