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 Isolated Power Supply Module (220 V to 9 V, 0.5 A) 100W LED with Color Temperature of 4000-4500 K SX1278 LoRa Transceiver (433 MHz, 7500 m) 100pcs XH2.54-7P Connector 5V 2A Power Supply for Raspberry Pi (with EU type power plug)