They have vinyl coated ends and are conected by a shiny silver-colored chain. The tension is a constant light to medium. No, they don't have teeth. Tension is easily controlled with a turn of the screws. The clamp is similar to our A269's, sold singly and without a chain.
Pressure is controlled by turning the screws.
These have a strong bite. 96.00 As should be obvious from the rather high price, these are very high-end nipple clamps. They are made mostly of solid brass, which gives them an attractive gold color. The tension on these clamps is adjusted by turning the black cylinder at the base of the clamp, which will slowly increase or decrease the pressure. This mechanism allows for very precise, conrolled tuning of the intensity.