2pcs Coupling Hub for 4 mm Shafts 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 » 2pcs Coupling Hub for 4 mm Shafts This coupling hub allows secure coupling of a variety of mechanisms to 4 mm motor shafts. SKU: JSL13282219971 Price: 9.57 $ Product in stock SSL Certificate Quantity Updating cart... Overview This coupling hub allows secure coupling of a variety of mechanisms to 4 mm motor shafts. Specifications Length: 15.5 mm Inner Diameter: 4 mm Outer Diameter: 22.5 mm Related Products 2pcs 24 V 40 W Heating Element for 3D Printer 40 W Inverter (12 VDC to 220 VAC) Power Supply Module (220 V to 5 V, 2 A) JGA25-310 DC Gearmotor (9 RPM at 6 V) JA12-N20 DC Gearmotor (500 RPM at 6 V)