1. Silicone caulking nozzles are a group of nozzles specially made for caulking glue, which can save a lot of time and make the sealant smooth when applying glue. It is made from high-quality silicone materials, which makes it durable and non-sticky. 2. Easy to use. This is a caulking dressing agent on the caulking nozzle. You can save a lot of time by making the sealant smooth when the sealant is alternated. Variable, it can be used alone with a trowel. 3 different sizes, 6.5R, 10R, 13R three different sizes of nozzles to meet your needs. When you seal different positions and angles, they can meet your needs in sealing work.