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 JGA20-130 DC Micro Gearmotor (72 RPM at 6 V) Steering Device for MG995 and MG996 Servomotors ADS1115 ADC Module JGB37-520 DC Gearmotor (600 RPM at 24 V) 30pcs 2 x 20 mm Shaft