From our firends at Kohlhoff GmbH. Nice combo:
Ronstan’s Lashing Orbit Blocks will be used as gennaker sheet blocks on EMMA, a brand new Swan 60. The bigger ones with 80 mm sheaves are used aft, the smaller 60 mm ones lead the sheet to the winch. For easy attachment of the blocks Kohlhoff’s Loop Shackles are chosen. These custom made sizes are made of Gottifredi Maffioli’s DSK78 Ultra covered with extra Dyneema to provide a smooth surface and additional chafe protection.