ITEM NAME:10 PCS F623ZZ flange bushMiniature deep groove ball bearing3*10*4mm PbJ Gn Specifications Model: F623ZZ Color: gray Material: Chrome Steel Size: 3x10x4mm Suitable For: 3D printer Features - Selection of metal material, good quality, long life - Smooth operation, high accuracy - Ideal for international brands instead Packing Included 10 x Ball Bearing F623ZZ Note: Please allow small error due to manual measurement..Model: F623ZZ. 10 x Ball Bearing F623ZZ. Suitable For: 3D printer.