Profile for 57.056/057

Designed for easy mounting without special tools, supplied with a simple instruction manual. The drum provides space for the forestay turnbuckle to simplify the installation. Fitted with modular oval extruded anodized alloy aluminium foil elements, 1.5 metres long, twin groove, which provide a high aerodynamic performance. The drum has special stainless steel spacer chain plates for best positioning over the deck; the chain plates are pierced for best height adjustment and anchor crossing. The swivelling head and the drum work on double sphere Derlin balls which do not require lubrication and only need little maintenance. The drum is made of anodized aluminium and its stainless steel components are insulated with a nylon film. Designed for mounting over existing headstay by releasing it from head chain plate. The size of the lower headstay terminal should be lower than 13 mm for models 57.053/054/055 and lower than 23 mm for models 57.056/057.