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Uxcell 12 Packs U624ZZ U Groove Track Guide Bearing 4x13x7mm U Groove Roller Wheel Carbon Steel Bearings
Single-row pre-lubricated normal accuracy. With small friction and high-limit speed Ball Bearings are cost-effective and require little maintenance. Can be used to build the track system or replace the wheel widely used in door and window to track...
$17.49 Free Delivery