2mm to 3mm 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. » Connectors » 2mm to 3mm Coupling Hub This copper coupler can be used for connection of 2mm to 3mm 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 3mm shafts of RC toys, boats and helicopters. Specifications Length: 20 mm Material: Brass Related Products JGB37-545 DC Gearmotor (960 RPM at 24 V) 2pcs 13 mm Antistatic Brush JGA25-371 DC Gearmotor with Encoder (201 RPM at 12 V) Remote E3D v5 3D Printer Head (0.5 mm nozzle, 1.75 mm filament) JGA25-370RC DC Gearmotor with Extended Axis (133 RPM at 12 V)