What makes this sounds kit different? The Dittle Sounds are made out of chrome plated brass. These babies are also very long. Measuring 16 inch in length. One end is flat, making it a great connector for electrical play 8 sounds in total make up the set. You can now order this kit in two size sets: small/medium (which run from 8 to 22 french) and medium/large (which run from 18-32 french). The sounds are protected in a velvet-lined zipper case.