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. » Gearmotors » 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 Adjustable Step Down Power Supply (30 V, 10 A) JGA25-370 DC Gearmotor (36 RPM at 24 V) TLC5615 10-bit Serial Digital to Analog Converter Module JGA25-370RC DC Gearmotor with Extended Axis (27.5 RPM at 12 V) 2pcs XT60 Male to T Male Connector