12Pcs Medical Vacuum Cupping Cup Suction Therapy Device Body Massage Health Care Features: Traditional Chinese treatment. Good for health regimen. Cupping is the best deep tissue massage available. With a good penetrating effect and a big drawing strength. Improve the muscle immunity and function. Specifications: Item Type: Cupping Cup Material: Plastic Features: Therapy, Massage Tool, Suction, Health Care Size Details 01#: Inner Diameter: 5.5cm/2.17", Outer Diameter: 6.6cm/2.60" (Approx.) 02#: Inner Diameter: 4.7cm/1.85", Outer Diameter: 5.8cm/2.28" (Approx.) 03#: Inner Diameter: 3.8cm/1.50", Outer Diameter: 5.1cm/2.01" (Approx.) 04#: Inner Diameter: 3.4cm/1.34", Outer Diameter: 4.4cm/1.73" (Approx.) 05#: Inner Diameter: 2.5cm/0.98", Outer Diameter: 3.2cm/1.26" (Approx.) 06#: Inner Diameter: 21.cm/0.83",  Outer Diameter: 3cm/1.18" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Packing Includes: 1 x Suction Pump 12 x Cupping Cups (6 Types, 2Pcs for Each Type) 1 x Manual