684ZZ Shielded Ball Bearing, Bearing IS made of Bearing Steel, each bearing has 2 Metal Shields to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.
684zz bearing is a kind of multi-purpose miniature bearing.
It widely used in precision instruments, Minimotor, remote control model, etc industries.
Material: Bearing Steel
Size:4 x 9 x 4mm
Quantity: 10 pcs
Package Contents: 10 x Miniature Ball Bearings
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.