Plastic Cone Protectors Discs Adopters are used for Paper Cones and Paper Tubes to avoid and minimize any damage to the edges of Paper Cones and Tubes.Plastic Cone Protectors Discs Adopters of following specification are available:* 3-30, 4-20, 54mm cup type, 56mm, 59mm, 61mm, 5-57 grooves type, 5-57 cup type and other on-demand sizes.