Cake Boss Decorating Tools 4-Piece Icing Coupler Set Sturdy plastic couplers in a convenient set of four makes cake decorating easy and enjoyable Standard-size couplers are ideal for use with Cake Boss icing tips and piping bags Easy-threading couplers sport bold pops of Cake Boss signature color The couplers are top-rack dishwasher safe; hand washing is recommended Quality Assurance Guarantee