CouplingSuppliers 8 fonts coupling is design for encoder, the bushing made of high strength aluminium alloy, it it softness and not easy to break, the elastomer made of TPU, Anti-oil, Anti-oxidation. 8 fonts coupling can opperate from -30 to 70 degrees temperture. The bore size of the font coupling can be customized according to your requirement, if you want other bore size, please feel free to...