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Product Name: Metal Shaft Coupling Accessories Copper Couplings PartsMaterial: CopperSize Description: 2mm to 5mm(2mm-5mm): The diameter of the outlet at either ends that is 2mm and 5mm respectively.Dimension: Diameter at either ends of move section 8.7mm, diameter within the middle of move part 7.3mm, total length 20mm.Screw hole: M3Through hole, connect 2 assorted diameters of optical shaft, can also connect motor and a optical shaft, or connect different diameters of shaft. Can do either the filament rod can also do the model RC boat strength paddle rotor shaft and motor between the transmission parts.Each coupling is sent 4pcs M3 machine meter screws. One wrench per customer.Pack Quantity: 1Pcs




























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