RDM-I: Reduce Diameter- Inverted Made in Italy. Once you take out the mast from its mast bag, do not be thinking that something is wrong. The ferrule is part of the top, and not part of the bottom anymore. Therefore, the rdm is now being called RDM-I. After testing with our wave team, the masts, we have discovered that landing hard flat or nosedive jumps, was creating extra stress to the top, where the ferrule would enter it. By having the ferrule being part of the top, the stress is taken out and the tops do not suffer the extra stress that could bring in the worst case to breakages. We have decided to clean up our RDM-I range by offering 3 very distinctive models. The K99, K91 and the K71 gradients of masts which are ready to astonish in performance and durability. The new K71 is able to adapt to most curves thanks to its design layers set up. A new rubber cap at the joints, to clean up the inside part of the mast from dirt, while uniting the top to the base. Available sizes: K99 | Carbon 99% | 340, 370, 400, 430 Size Type % Bottom % Imcs Top % Type Compatible with Base (g) Top (g) Weight (g) +-10% 340 RDM 99 63 15 75 Constant Curve Constant Curve 540 520 1060 370 RDM 99 63 17 75 Constant Curve Constant Curve 800 420 1220 400 RDM 99 63 19 75 Constant Curve Constant Curve 920 500 1420 430 RDM 99 63 21 75 Constant Curve Constant Curve 910 740 1650 K91 | Carbon 91% | 340, 370, 400, 430 Size Type % Bottom % Imcs Top % Type Compatible with Base (g) Top (g) Weight (g) +-10% 340 RDM 91 63 15 75 Constant Curve Constant Curve 640 600 1240 370 RDM 91 63 17 75 Constant Curve Constant Curve 890 500 1390 400 RDM 91 63 19 75 Constant Curve Constant Curve 1010 590 1600 430 RDM 91 63 21 75 Constant Curve Constant Curve 1080 820 1900 K71 | Carbon 71% | 340, 370, 400, 430 Size Type % Bottom % Imcs Top % Type Compatible with 340 RDM 71 ADAPTIVE CURVE Adaptive Curve Any sail 370 RDM 71 ADAPTIVE CURVE Adaptive Curve Any sail 400 RDM 71 ADAPTIVE CURVE Adaptive Curve Any sail 430 RDM 71 ADAPTIVE CURVE Adaptive Curve Any sail Please click here for detailed information about Point-7 masts: