2Pcs Golden Driving Wheels + Bearing Wheels + Plastic Track Set Accessory For Robot Car Chassis

Specifications: Type: 2Pcs Plastic Track + Driving Wheel + Golden Bearing Wheels DIY Kit Bearing Wheel parameters: Title: Metal bearing wheels Color: Golden Material: Aluminum Type: with connectors Size: 31.85*48.3 (diameter) * 34.08 (connector) mm Driving Wheel Parameter: Color: Golden Material: Aluminum Type: with connectors Track parameters: Material: Plastic Color: Black Size: 4.5cm* 78cm / stripe (about 100joint) Package Included: 2 x Plastic Track 2 x Golden Driving Wheel 4 x Bearing Wheel