You?ll find countless uses for this versatile product?from writing messages and outlining details to decorating treats with personalised designs. Round tips make it easy to create script, plus a variety of designs including: Outline, Lettering, Dots, Ball, Beads, String Works, Lattice, Lace Work. For enhanced control, versatility and neatness, use tips with its matching Coupler (sold separately). Coupler allows the decorator to change similar sized tubes without emptying the contents of the Pastry bag.Works with any kind of pastry tube, including folded parchment, canvas and plastic.Rust Free. Carefully Crafted. Seamlessly Manufactured. Extremely Durable/Non-Malleable. Great Performance/Better Results.