Features: These bearings are made of high quality steel for low noise and long service life. They are double shielded to avoid contaminants entering and save lubricant. Bearings have a 17mm inner diameter, a 23mm outer diameter, and a 4mm thickness. These are great for small hobby 17mm shaft/rod projects.
There comes total 10 pieces miniature bearings which you may use for many different projects.

Specification:
Model: 6703ZZ
Material: High carbon bearing steel
Type: Deep groove high speed
Rolling Element: Single row
Inner Diameter: 17mm / 0.7in
Outer Diameter: 23mm / 0.9in
Thickness: 4mm / 0.2in
Quantity: 10pcs
Weight: 43g / 1.5oz(approx.)

Package list:
10 * Bearings