CraftyB Caulk Saver Caps, made from PLA plant-based plastic in the United Kingdom, are designed to prevent caulk and silicone tubes from drying up. These reusable caps come in a random colour and are ideal for plumbers and builders to effectively seal their tubes of caulk or silicone to ensure they stay fresh and ready for use. Perfect for DIY projects or professional work, these caps help to extend the shelf life of sealants and prevent wastage. X5 Caps per order. Random colours sent but will be X5 of the same colour at time of purchase.