This 12 piece Rosebud Urethral Sound kit is perfect for beginners. Each sound gradually increases in diameter and has a smooth tip for easy insertion.

In body safe stainless steel, the 12 included Rose Bud Sounds are naturally extremely firm and quite weighty. 

Each probe (other than the first, which is straight and 11.5"/29.21cm long) is identical in shape and features a length of about 12 inches/30.5cm. 

A swell at each tip ranges in size and thickness from .04"/.1mm to 4.72"/120mm, so you or your partner will be able to choose the one that best fits your experience level and/or stimulation requirements.