Download Step files Standard HK couplings (steel/aluminum) Standard HK-couplingssteel versionNote: right mouse button "Load linked file". If a .txt has crept in, just delete it and keep the .stp! HK20-2,8 HK20-4,5 HK20-6,4 HK20-11 HK20-17 HK20-28 HK20-45 HK20-64 HK20-110 HK20-170 HK20-280 HK20-450 HK20-640 HK20-1100 Standard HK-couplingsaluminum versionNote: right mouse button "Load linked file". If a .txt has crept in, just delete it and keep the .stp! HK80-2,8 HK80-4,5 HK80-6,4 HK80-11 HK80-17 HK80-28 HK80-45 HK80-64 HK80-110 KH80-170 HK80-280