and durable. Make of excessive Bearing Steel,Deep Groove . Widespread bearing,economic and standard. Less Friction, Higher Speeds and Durability. Easy Installation & Replacement. Item Name: Ball Bearing Suitable for: TT02 TT-02 TT02D TT-02D 1/10 RC Car colour: silver Material: metal Package Contents: four x Ball Bearing(5x11x4mm) four x Ball Bearing(8x12x3) 8 x Ball Bearing(5x10x4mm) Only the above package content, other merchandise shouldn't included. Note: Light mirrored image and varied exhibits may cause the colour of the thing within the photograph a chunk various from the genuine thing. The size allowed error is +/- 1-3cm.