The 609 drum cheeks swivel through 360º, ensuring safe manoeuvers through a smooth and regular feeding of the tiller rope. These cheeks protect the reefing drum efficiently and the round unobtrusive design, combined with recessed screws, allow the free running of the ropes. Reefing drum features highly resistant stainless steel and Delrin ball bearings. Halyard swivel features Torlon and Delrin ball bearings which enhances the overall performance and increases the mechanical resistance. Chainplates width is adjustable.