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The KI Hegar set gathers eight double-ended urethral sounds in one case. Each end is a different diameter, so the set covers sixteen sizes from 3 mm up to 19 mm. Hegar sounds are straight, slightly tapered rods with rounded tips, a classic shape that sounding enthusiasts use to work gradually through sizes. This is a set for people who already sound, or who are ready to learn slowly and carefully.
Sounding means inserting a rod into the urethra, which is delicate and easily irritated. Follow these rules every time. Wash your hands, then clean and sterilise the sound before use. Use a sterile, water-based lubricant, applied generously. Start with the smallest size, insert slowly and let gravity do most of the work; never push against resistance. Stop if you feel sharp pain, and don't continue if you notice bleeding or burning afterward. Never move a sound from anal or vaginal use to urethral use.
Because each sound has two ends, eight rods cover sixteen diameters, in small steps between 3 and 19 mm. That lets you find a comfortable starting point and change size gradually, a step at a time over many sessions rather than in one. Most people will never use the largest ends, and that's fine; the range simply means you won't outgrow the set. Stay on a size for several sessions before moving up, and drop back down any time something feels uncomfortable. The rods are chrome-plated brass, smooth and with weight to them, which helps a sound glide in under its own weight.
KI says the sounds can also be used vaginally or anally. If you do, dedicate those sounds to that use and keep them apart from the ones used for sounding. Smaller diameters can also be used for gentle external touch along the shaft or around the head, which is a low-pressure way to get used to the feel of cool, heavy metal before any insertion.
Metal holds temperature well. Running a sound under warm water before use takes the chill off; never heat it with anything hotter than warm tap water.
The set suits experienced players who want many sizes in one purchase. It's less suited to a complete beginner who only needs one or two small sizes: the single KI Hegar 5 to 6 mm sound is a smaller commitment. If you prefer something soft and flexible, a silicone sound such as the Isabella Silicone Urethral Sound Trainer bends with the body rather than staying rigid.
Clean each sound with warm water and mild soap or toy cleaner after use, dry it completely and sterilise it before the next session. Inspect the chrome plating regularly; if it chips, flakes or wears through to the brass underneath, stop using that sound. Store the set in its zippered, velvet-lined case so the rods stay clean, don't scratch each other and stay in size order.
New to this kind of play? Read our BDSM safety guide, or explore the BDSM collection.
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