The formula for MOI, moment of inertia, is mass (g) times distance (cm) squared. So you can increase MOI a little by increasing the mass; but a lot by increasing the distance of the mass from the axis of rotation. MOI divided by mass is radius of gyration squared (k2). This is a very simple calculation; and allows a direct measure of the effectiveness of the mass distribution in generating MOI.
The Scottsdale anser was an important improvement over the old blades; 19% more k2 (9.43/7.92) than the old blade. The Newport 2 was another important improvement; 30% more k2 (12.34/9.43) than the original anser style blade. But there is a limit to the improvement possible in the traditional geometry using the heavy steel base material. Steel weighs about 7.92 g/cm3
The CURE TX1 develops 40% more k2 (17.41/12.34) than the Newport 2 by using lightweight aircraft grade aluminum as a base material. The aluminum weighs only 2.72 g/cm3 (and feels great!). By using tungsten weights in the toe and heel, the TX1 develops the MOI of a large high mallet in a blade.
The CURE RX5 uses the same aircraft grade aluminum but in a 6” wide putter; developing levels of MOI, STABILITY and forgiveness never before seen.