Specifications Brand: RSC Bearing Material: Chrome Steel Ball Material: Chrome Steel Recommend for Model: Kyosho RC 67 VETTE / GP10 4WD Bearing Model, Dimensions & Quantity: MR105-2RS (Outer Diameter: 10mm / Internal Diameter: 5mm / Width: 4mm) x 12pcs MR148-2RS (Outer Diameter: 14mm / Internal Diameter: 8mm / Width: 4mm) x 4pcs Please note that the information above is provided by the producer of the replacing bearing. All the recommended models are for reference only. Buyers should confirm the correct size and quantity of the bearings for your own model before purchased the replacing bearings.