Kangzhu Rotary Cupping Set is a premium quality and unique cupping set. Each cup is able to create its own suction. This eliminates the need for hand pumps, tubes, and the inconvenience of having to connect the pump to each cup during treatment. It is easy to use. Just place the cup on the skin and turn the knob clockwise to create and adjust suction. The plastic is strong, durable, and safe. Rounded edges make the cups comfortable on the skin with a tight seal. Clear cups allow easy viewing of the treatment area. Kangzhu is ISO9001 quality certified. Each set contains 6 cups. 1 x 2.8 cm, 1 x 3.6 cm, 1 x 4.4 cm, 1 x 5.3 cm, 1 x 6 cm, 1 x 6.8 cm, 1 x cupping manual and instructions.