Furling Drum - 3.74". Drums are molded from glass fiber reinforced nylon with stainless steel swivel and ball bearing assemblies. Furling drums will accept lines up to 4mm in diameter. Features: Holds up to 8.5M of Line. Specifications: Drum Diameter: 95mm Sail Area: 100 square foot Break Load: 1,108kg Safe Working Load: 554kg Weight: 281g. Barton NOS 15 fockroller line Spool on for pre-sail up to 9.5 m² Rowing Boat Parts (49324). New. Constructed for durability in sailing applications with corrosion-resistant swivel and reliable bearing assemblies. Compact design for easy installation and smooth furling action. Includes one unit.