The silicone tube is a low diameter tubing used to hold your hook bait in place on the shank of the hook. It allows you to create a range of finely-tuned rigs. The silicone sleeves are made to cover the swivel on the lead to keep everything neat and tidy but more importantly offer much better camouflage. They are also the perfect size to fit over our Kwik Links as well as the newly released Stik Klip.