C-Tech spars (Moth mast, Moth boom, Moth battens, Moth tube sets), have the highest possible stiffness and strength to weight ratios and are produced to exacting standards with consistent bend curves. This is achieved by a combination of fibre selection and placement. The fibres are all high modulus prepreg carbon fibre. These are placed with no crimp (interweaving of layers) and no laps along the the taper. This greatly improves mast strength and consistency of flex curve.