A stiffer 45 mm racing boom which is suitbale for the more experienced, heavier weight sailors. The MK4 45 mm boom for the Optimist is suitable for sailors above 45 kg.
Glass fibre filled Nylon in- and outboard end fittings
3 mm pre-spliced pure Dyneema vang
High grade alloy, dark grey anodized
3 mm pure Dyneema bridle with stainless steel ring