They're rubber sealed ball bearings, which offer smooth rotation, great accuracy of accessory and also simplified upkeep.
• 1150 Sealed Ball Bearings x2
• Applications include many classic Tamiya R/C models.
• Using ball bearings in place of synthetic and steel bearings provides better rotation and better parts setup.
• These ball bearings employ blue rubber seals versus metal people – this enables you to open the bearings to clean and work on them. Blue rubber seals additionally greatly aid in preventing debris going into the battle roller.
• Low-viscosity oil is used to lubricate the internal workings.
• Periodically perform upkeep such as for example including oil; after crashes, checking bearing movement is advised.