Description: 100% brand new and durable. Brand with high steel bearing, deep groove ball bearings.. Common bearing, economical and standard. Less friction, higher speeds and durability. Special non-contact double rubber seals to seal dirt while providing frictionless performance. Easy to install and replace. Specification:Color: BlackMaterial: Steel + RubberQuantity: 21 PiecesSuitable for: Traxxas Slash 4x4 VXL Rustler Stampede HQ727 Remo 1/10 RC CarPackage Contents:1 x Bearing (12x18x4mm)5 x Bearing (10x15x4mm)2 x Bearing (8x16x5mm)2 x Bearing (6x12x4mm)7 x Bearing (5x11x4mm)4 x Bearing (5x8x2.5mm)Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement error is +/- 1-3cm.