"The stainless steel Pratt set is made up of 29cm (11.5 inch) long sounds which are similar in shape to our Hegar sound set. Each sound gradually increases in width, which allows you to find a perfect fit and experiment with larger sizes. Ideal for beginners and experienced urethral play enthusiasts. These urethral dilators have a slight ""S"" shape. Contains 8 Sounds 16 sizes from 13fr (1/8) to 43fr (9/16) Sounds are 285mm long "
