Features: These bearings are made of high quality steel for low noise and long service life. They are rubber sealed to avoid contaminants entering and save lubricant. Bearings have a 8mm inner diameter, a 19mm outer diameter, and a 6mm thickness. These are great for small hobby 8mm shaft/rod projects.
There comes total 20 pieces miniature bearings which you may use for many different projects.

Specification:
Model: 698RS
Material: Bearing steel
Type: Deep groove high speed
Rolling Element: Single row
Inner Diameter: 8mm / 0.3in
Outer Diameter: 19mm / 0.7in
Thickness: 6mm / 0.2in
Quantity: 20pcs
Weight: 145g / 5.1oz(approx.)

Package list:
20 * Bearings