Konfort kisser button is soft while others are hard plastic. Hard plastic does not allow you to flex into position. With our material, the kisser is flexible and more comfortable on the lip. The larger (14 mm) diameter is great for the shooter . Konfort kisser buttons are made of soft material, but they have the slit in the side allowing you to install the kisser without removing the string from the bow. Then you can fix with nock point thread or matellic clamps (NOT included) These innovative designs can quickly be put on the string, saving archers time. - Available in a wide range of nice colors so an archer match their accessories - Weight : 10 grains / 0,65 grams -Diameter: 14 mm Height: 20 mm