Prepworks by Progressive 8-Piece Frosting Bulb Decorating Kit Set of 2 frosting bulbs with 6 stainless steel piping tips; have fun decorating cookies, cakes and cupcakes High-heat silicone bulbs are microwave safe for heating toppings; fill the frosting bulbs with icing or warm ganache before piping Set of 6 piping tips include closed star, French tip, leaf, basket, small circles and large circles Frosting bulb can be used in the microwave; holds approximately 3/4 cup Store tips inside the bulb when not in use; dishwasher safe