: Made of high quality tungsten steel, heavy duty and anti-rust, duable for long time use Weights will fits for Squareback series putters With grams marked (25g / 30g / 35g / 40g) in the center area, great replacement for your putter weights Weights include protective rubber rings seal (O rings) to avoid moisture from entering your putter weight cavity Tips: Install or remove weights with special 5-pins wrench tool, and please care to ensure that the wrench tool posts stay securely in the weight post holes Specification: Material: Tungsten Steel Color: Red Size: Approx. 2 x 1.1 cm / 0.79 x 0.43 inch Weight: 25g / 30g / 35g / 40g, options Package Includes: 1 Piece Golf Putter Weight Note: Due to the differences between different monitors, the picture may not reflect the actual color. There is 2-3% difference according to manual measurement, please check the size carefully before you buy the item. Thanks