Pattex Smoothing Cutter - for opening Pattex cartridges and smoothing sealant. The Pattex joint smoother not only allows for easy re-smoothing of various sealants but also acts as a silicone scraper for clean results, removing excess joint material. It can also be used to safely open all Pattex cartridges, such as a silicone cartridge, making it an ideal tool for grouting. It enables a burr-free cutting of the cartridge tip. Made from robust and abrasion-resistant plastic, the joint spatula is durable and the perfect tool for any DIY enthusiast. Versatile in use, the joint smoother smooths silicone and many other sealants while fitting comfortably in the hand. This practical joint tool features two components: one side of the smoother allows for opening cartridges, while the other side is for stripping and re-smoothing sealants. Keep the joint smoother out of reach of children.