Pololu - 12mm Hex Wheel Adapter for 3mm Shaft (2-Pack)

12mm Hex Wheel Adapter for 3mm Shaft (2-Pack)

Pro-Line Racing 1/10 6x30 to 12mm Aluminum Hex Adapters (Wide)

Pololu Universal Aluminum 8mm Mounting Hubs (M3) - RobotShop

These 35 mm long aluminum adapters convert a 6 mm diameter shaft to a 12 mm hex shaft that is compatible with many common hobby RC wheels. The set

12mm Hex Wheel Adapter for 6mm Shaft, Extended (2-Pack)

These 20 mm long aluminum adapters convert a 6 mm diameter shaft to a 12 mm hex shaft that is compatible with many common hobby RC wheels. The set

12mm Hex Wheel Adapter for 6mm Shaft (2-Pack)

12mm Hex Wheel Adapter for 6mm Shaft (2-Pack), Hub's e Suportes

Pololu - 115:1 Metal Gearmotor 15.5Dx30L mm

12mm Hex wheel hub adaptor for 3mm shaft (Pair)

12mm Hex Wheel Adaptor (16mm Hub Pattern) - 2 Pack

Aluminum wheel adapter 6mm M3 - Pololu 2674 Botland - Robotic Shop

Pololu - 180:1 Mini Plastic Gearmotor, 90° 3mm D-Shaft Output