Harken® Small Boat furling systems allow the dinghy or trailerable cruising sailor to set and furl the jib from the cockpit. The drums and halyard swivels of these furling systems feature multiple stacked races of Delrin® or Torlon® bearings to ensure smooth rotation under load. All Small Boat furling systems require a jib with a luff wire properly seized to the sail. Use for: 434 Dinghies under 16 ft (4.9 m) 435 Dinghies to 20 ft (6.1 m) Catamarans to 18 ft (5.5 m) 436 Cruising boats to 25 ft (7.6 m) Catamarans to 23 ft (7 m