Solo Seldén Cumulus Mast with Front Taper - Excluding Rigged Pack. The Cumulus mast for Solo provides an excellent balance of stiffness, weight and gust response. Please note the above Solo mast(s) comes as standard - and fitted with the Selden gooseneck PN 508-261-01 - see below image (non extended type) A typical Selden gooseneck PN 508-261-01 If you require a Selden Extended gooseneck (see below image) fitted (PN 508-808-01) to the Solo Cumulus mast - please contact Rooster Sailing on 01243 389997 The Cumulus masts are using the new Xtra Proof Strength (XPS) aluminium alloy. Mast Properties Sectional Weight 1.04 kg/m Dimension - fore/ aft 70.5 mm Dimension - athw 58.7 mm Stiffness - fore/aft 20.41 cm4 Stiffness - athw 14.4 cm4 NOTE: Any Rooster web wide discount offers or promotions do NOT apply to all Solo spars, sails, foils, covers and fittings.