30/PR1 30/PR2 30/PR3 30:1 HPCB 12V 30:1 HPCB 12V DUAL-SHAFT 30:1 HPCB 6V DUAL-SHAFT 30:1 METAL GEARMOTOR 37DX52L MM 12V HELI 30:1 METAL GEARMOTOR 37DX68L 24V 64 CPR 30:1 METAL GEARMOTOR 37DX68L 64 CPR 30:1 MICRO METAL GEARMOTOR HPCB