We love our 48-400 Black Flat Gloss Smooth Cap with F217 Liner as the sleek design of this lid makes it perfect for a wide variety of products. The 48-400 Black Smooth Cap features a F217 liner, making this the perfect screw cap for a wide variety of jars featuring a 48-400 neck size. This flat gloss cap works great for capping products like creams and salves.