... all the sizes, for special sizes and types. Pu elastic couplings for most all the sizes and types!For special type ... , UPH, OSI,ODI,OUV,SPG,SPGW,GR,HBY,HBTZ,HBTY ,SS,WR,RVT,KZT,DU BUSH,O RING,ISI,IDI,IUH ... different sizes.good quantity , better price. elastic coupling, Pu elastic couplings