2mm to 5mm Coupling Hub Please allow 4-6 days processing before ship out. For gearmotors or similar motors, we don’t ship using epacket and will use regular shipping if needed. Please note that regular shipping like singapore post might take 45-60 days to deliver, epacket 20 -35 days to deliver Thank you for understanding. » Gearmotors » 2mm to 5mm Coupling Hub This copper coupler can be used for connection of 2mm to 5mm shafts of RC toys, boats and helicopters. SKU: OTH27407972788 Price: 0.99 $ Product in stock SSL Certificate Quantity Updating cart... This copper coupler can be used for connection of 2mm to 5mm shafts of RC toys, boats and helicopters. Specifications Length: 20 mm Material: Brass Related Products JA12-N30 DC Micro Gearmotor (640 RPM at 12 V) JGA25-370 DC Gearmotor (176 RPM at 6 V) JGA25-370RC DC Gearmotor with Extended Axis (27.5 RPM at 12 V) Wheel and Mounting Kit for 35 mm Gearmotors JGB37-3530 DC Gearmotor (1600 RPM at 12 V)