What's in the box:

Aibecy 10pcs LM8UU RJMP-01-08 Solid Polymer Bearing 8mm Shaft Plastic Linear Bearing for 3D Printers (10)

Features:
Plastic linear bearings can remove vibrations and unnecessary noise.
Compared with metal ball bearings, this provides the advantage of not requiring lubrication, also extend the service life.
Rapid installation, snap rings fixed.
Light weight and clean.
6/8/10pcs for option.

Specifications:
Quantity: 6/8/10pcs(optional)
Package Weight:
6pcs: 20g / 0.7oz
8pcs: 26g / 0.9oz
10pcs: 32g / 1.1oz

Packing List:
10 * RJMP 01-08 Plastic Bearing