This 6-Piece Rotary Cupping Set is a unique way to relieve sore and aching muscles, explore erotic massage, or use with BDSM play. The cupping method stems from traditional Chinese medicine, but its effects can be enjoyed in a variety of ways. Simply place one or more cups directly onto the skin and turn the dial clockwise to create suction. Lubricate the skin first in order to slide the cups around for different sensations. If you or your partner are looking to spice things up or try something new, this Cupping Set is an exciting unconventional toy for your collection! Measurements: Set includes one cup of each of the following inside diameters: 1.125, 1.5, 1.75, 2, 2.375, and 2.75 inches. Note: Read instructions before use.