Ideal for detailed piping, writing and pattern designs. These professional grade open star piping tips will surely add an artistic element to your baking. - Material: Stainless Steel - Made in Korea - Used with Standard Coupler - Sizes: No. 13 - 34.5mm H x 1.7mm W top diameter No. 14 - 34mm H x 2.1mm W top diameter No. 16 - 34mm H x 3.5mm W top diameter No. 18 - 32mm H x 4.7mm W top diameter No. 20 - 31mm H x 5.5mm W top diameter No. 21 - 32mm H x 6mm W top diameter No. 363 - 29.5mm H x 5.6mm W top diameter