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. » Other » 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 50pcs Mini DC Power Jack (Φ1: 3.5 mm, Φ2: 1.2 mm) JGA20-130 DC Micro Gearmotor (144 RPM at 6 V) Cooler for Raspberry Pi 3 JGA25-310 DC Gearmotor (235 RPM at 12 V) JGA25-371 DC Gearmotor with Encoder (8.6 RPM at 12 V)