This clitoris pump set include a basic plastic pistol-style hand pump, silicone tubing, and 3 different-sized plastic cylinders designed to fit over the clitoris. These cylinders may also be a good size for nipple play for many users. Cylinder sizes are 1.125" diameter x 2.75" total length, 1.25" x x 2.75" total length, and 1.5" diameter x 3" total length.
The cylinders stay vacuum tight even after the pump has been disconnected, so you can leave them on for extended periods without having the pump in the way.
The pump itself doesn't have a pressure gauge and is very basic; the value in this kit is getting 3 cylinders plus a pump for a good price. This is one of the most affordable clitoris pump sets on the market.
The cylinders in this kit are relatively short compared to other clitoris cylinders, which is fine for many people but not great for a user with a longer clitoris. For those who need/want cylinders of longer length, consider additional cylinder options from LA Pump (in four clitoral cylinder sizes and two advanced trans male sizes).
Clitoris pumps are used by different folks for a variety of reasons. Pumps can help increase sensation to the clitoris by drawing more blood to the area. This will temporarily enlarge the external erectile tissue past its usual size, making it more visible and accessible to various kinds of stimulation. For some, the sensation of suction offered by the pump and cylinder is pleasurable in its own right.
Pumps are also used by trans and non-binary folks to enlarge/enhance the clitoris/neo-phallus. Some trans folks do this simply to temporarily enlarge and enhance their genitals for play time, while others use pumping as a part of their genital surgery regimen.