Nozzles Size: Bottom Dia. 1.22inch, Upper Dia. 0.9inch, Height 2.48inch.The practical size of the russian tips allow you to decorate your cakes or cupcakes with smooth move. These have a slight learning curve and are best when used with a stiff icing. Baking Necessities: 6 sphere ball tips, 4 flower nails, 1 flower lifter,2 cleaning brushes, 1 packing box. They may need some practice but the end result can be really amazing. And they are all reusable. Durable Material: 304 stainless steel ball shape piping tips, food grade material, giving them durability that is unmatched. They never rust, BPA-Free, have a seamless build for added sturdiness, fits dishwasher, and handle stiff icing without ever losing shape. Wide Application: They are easy to use, just remember the flowers will have a depression in the center that needs to be filled.Perfect for making huge flowers multi colored then freeze and place on cake then fill in with smaller drop flowers and leaves. Great for various cupcakes,bake sales, birthday parties, team snacks, etc. Baking Lovers' Gift: Everyone needs some baking tools he or she can turn to when decorating baked food, which is why this 6 pieces russian ball piping kit makes a terrific gift idea for any cake decorator, home baker or culinary school grad in your friend circle.