For those fishermen, who likes to play very tight rubbers in the lonely evening. I have use many kind of rubbers and silicones tubes these years, but this Stonfo silicone is best of all. In my opinion. I don`t use knot anymore in front hook of two hook leader. With silicone you can adjust front hook position easily and with bigones, the line wont break off so easily between hooks if you use silicone. This is my absolut choice.