100% Carbon fiber RDM mast. Constant curve bend characteristics work perfectly with the majority of sails on the market. High carbon content provides supreme reflex response to maintain desired sail shape. Color coded mast sizes. Product Details TheChinook Sailing SuperLite 100% Carbon RDM Mastis the ultimate high performance combination of build quality and materials, including pre-preg construction. This mast is ridiculously light! 100% High Modulus Carbon Fiber Constant Curve 2-Piece Provides excellent reflex response to maintain desired sail shape. Color coded mast sizes. Bag & Shim sold separately Two Year Warranty Item IMCS Stiffness IMCS Bend Curve Flex Type Weight 340cm 16 63B / 77T Constant Curve 2.33 lbs. or 1.1 kg 370cm 17 63B / 77T Constant Curve 2.7 lbs. or 1.22 kg 400cm 19 63B / 77T Constant Curve 3.20 lbs. or 1.45 kg 430cm 21 63B / 77T Constant Curve 3.57 lbs. or 1.62 kg 460cm 25 63B / 77T Constant Curve 3.86 lbs. or 1.8 kg Compatibility Chart Aerotech Yes Challenger Yes Ezzy Yes Gaastra Yes Goya Yes Gun Yes Hot Sails Maui Yes KA Sails Yes Loft Yes Maui Sails Yes Naish Yes Neil Pryde Yes North/Duotone Yes Point 7 No RRD Yes S2 Yes Sailworks Yes Severne No Simmer Yes Vandal No