2mm to 2mm 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 » 2mm to 2mm Coupling Hub This copper coupler can be used for connection of 2mm to 2mm 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 2mm shafts of RC toys, boats and helicopters. Specifications Length: 20 mm Inner Diameter: 2 mm Material: Brass Related Products 250W Boost DC-DC Converter 2pcs SOP20, SSOP20 and TSSOP20 to DIP PCB Adapter Black 1147 Propeller with 6 mm Hole Power Supply Module (220 V to 5 V, 2 A) JGB37-3530 DC Gearmotor (45 RPM at 24 V)