3mm 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. » All Products » 3mm to 5mm Coupling Hub This copper coupler can be used for connection of 3mm 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 3mm to 5mm shafts of RC toys, boats and helicopters. Specifications Length: 20 mm Material: Brass Related Products JGB37-520 DC Gearmotor (600 RPM at 12 V) 20pcs XH2.54-7P Right Angle Pin Header and Connector Proximity E3D v5 3D Printer Head (0.5 mm nozzle, 1.75 mm filament) 4.0 Bluetooth Module (3.3V and 5V compatible) M2x30 mm Screw + Nut (30 pcs pack)