What You Get: Cake decorating kit includes 1 silicone piping bag, 6 nozzles, 1 coupler, 1 sealing strip. Premium Material: The piping bag is made of food grade TPU silicone, which is durable, safe and eco-friendly. Pastry Nozzle Made of high quality 304 stainless steel. Human Design: The silicone piping bag works with all nozzles. The smooth interior is easy to squeeze and wash. The non-slip rough exterior is good for gripping. Reusable: The silicone piping bag can withstand strong extrusion without tearing or deforming. More environmentally friendly, reusable icing bags can eliminate the need to repeatedly purchase disposable plastic piping bags. Versatile: This set of icing bags and nozzles can meet your needs for decorating cakes and pastries. Simply screw on/off the couplers to quickly change the piping tips. The ideal DIY pastry kit for decorating cupcakes, cookies, candies, muffins.