Set Includes: 1 Dec Pen Universal Applicator, 2 x 16" Piping Bags, 2 x Large Plain Nozzles, 2 x Couplers, Simply fill bag with icing and insert into applicator. The ergonomic design ensures precise control which enables neat and clean starts and stops. The two same size nozzles and bags enable a quick change for two different colours of icing. Dispenses all the icing in the bag with light fingertip pressure. No need to squeeze firmly so especially useful for people with restricted hand movement.