These SWORKz ball bearings measure 5x10x4mm and feature red rubber seals to help keep out dirt and debris. Sold as a set of four, they are a factory replacement for SWORKz 1:10 2wd buggy platforms. The rubber-sealed design suits the demands of off-road RC use where contamination is a common concern. Features: 5x10x4mm metric sizing Red rubber sealed on both faces Set of four bearings Compatible with SWORKz 1:10 2wd buggy platforms 7/7/26 cs