Please note: The difference between each model of 2.0, 3.0, and 5.0 is that the diameter is different, and the material and the inner diameter of the rod are all the same. [Material]: PU+environmentally friendly rubber; [Suitable clubs]: Both putters can be installed [Suitable for golfers]; suitable for both male and female golfers. [Model]: 2.0: [Length]: 265mm; [Weight]: 43g+-2g; [Caliber]: 58R; [Diameter under the handle]: 29.49mm; Cover diameter approx.]: 27.82mm; [Model]: 3.0: [Length]: 265mm; [Weight]: 57g+-2g; [Caliber]: 58R; [Bottom Diameter]: 34.44mm; About]: 31.52mm; [Model]: 5.0: [Length]: 265mm+-2; [Weight]: 85g+-2g; [Caliber]: 58R; [Bottom Diameter]: 40.04mm; Cover diameter approx.]: 37.86mm