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. » All Products » 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 JGA25-370RC DC Gearmotor with Extended Axis (292 RPM at 12 V) 5pcs TTP223 Capacitive Touch Sensor M2x16 mm Screw + Nut (30pcs pack) 20pcs C15-2A Right Angle Gear JGB37-520 DC Gearmotor (61 RPM at 6 V)