2RS Miniature Series Metric Ball Bearings Rubber Sealed Fast Posrt ID13-30mm
Mini Miniature Small Ball Bearings, 2RS Rubber Sealed, PTX High Hardness Alloy Steel, UM Grade Ultra Precision, Low Noise 18dB High Speed Silent Bearings. ✅ 2RS Rubber Seal Structure, Excellent Dustproof Performance & Internal Grease Locking.