1.Blade size:18*48cm,18*48cm(with spline),16*50cm 2.shaft: 40%carbon,90%carbon,100% ... carbon(10cm adjustments) 3.length:customize Blade optionSK-ISK-II(with spline) SK-TBlade area685cm2685cm2625cm2Blade size18*48cm18*48cm16*50cmPaddle weight570g+/-20g680g ... at high temperature and pressure for maximum strength and durability, with a length adjustment of 10cm. Two blades are at both ...