Parts Deep Groove 6903-18RS MR18307 18x30x7 18307-2RS 18307-LBLU Ball Bearing Bicycle Bearing

Label:Yes Size: 18mm X 30mm X 7mm Material: Bearing steel Pacakge include:2pcst Bearings Ball Bearings 18307-LBLU 61903-18RS

Bearings are made of Chrome Steel, each bearing has 2 sealed with rubber seals to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.