Feature for feature, there is no equal to the Optiparts BlackGold. Constructed from the highest grade of aluminium available (Aerospace spec Alloy 7075 T6). 45 micron black anodised. All black fittings, Harken ball bearing blocks and Vectran ropes. Consisting of Blackgold EX900 Ø45mm mast, EX945 45mm boom, EX965 Ø29mm spar.