The Sea Sure jib furler is designed for complete reliability. The drum is completely enclosed to prevent rope from coming off and jamming during operation. It also features an all stainless steel thrust bearing so that it still operates easily when the forestay is fully tensioned. Being less than 50mm between centres allows the jib to be set very low to the deck for maximum sail efficiency. It can also be mounted below the deck using an additional stainless steel extension tube. The furler will take up to 3.5m of 3mm line allowing it to be used on sails with a foot length of approximately 3m (this is reduced if larger diameter line is used). Drum Diameter: 69mm Weight: 116g (25-54) Our head swivels are fitted with stainless steel balls and bronze seats for low friction and long life. They are available in two sizes and are fitted with anti chafe inserts for added sail protection. Weights: 53g (25-57); 48g (25-57A)