Color: As shown in the First image. Quantity and size : As shown in the title or . Tens Electrode Conductive Gel Pad For Body Acupuncture Therapy, Massage Why Use the Electrode Pads 1.compatible with Various Medium Frequency Electronic Physiotherapy Machines 2.Help to Improve Blood Circulation Promote metabolism and Eliminate Fatigue 3.Can Be Used For Various Medium and Low Frequency Physical Therapy Units with Stud Connectors.Applicable For Medical and Beauty treatment Features: Electrode Pads For Tens Therapy Machine Safe and Soft: Self-adhesive with Hypo-allergenic Gel Very Soft and Elastic, Capable of Attaching Tightly to Different Parts of Human Body Reusable: Can Be Used For Many Times (Due to Personal Hygiene Reason, It is Recommended That Electrode Pads Should Be ONLY Used by One Person.) Size of Stud: About 3.5-3.6mm Diameter Features: 10Pcs=5pairs=5bags 20Pcs=10pairs=10bags Material: Silicone + Gel The Electrode Pad Helps to Keep Health. Help to Improve Blood Circulation, Promote Metabolism and Eliminate Fatigue. Self Adhesive, High Adhesive, Snap-on, Convenient to Use and Reusable Useful and Safe Accessory Function: Environmentally Friendly and Durable Conductive Silicone Patches Can Be Reused; Anytime, Anywhere; Silicone; Plug in and Enjoy After Each Use, Apply the Film Back to Cover The For Long-term Use Easy to Use User-friendly Design, Health, Green and Environmentally Friendly Materials; Light and Convenient, Only Need to Be Simply Attached to the Massage Part when Using, You Can Enjoy Where You Want to Paste Package Include: 20/10 Pcs * Electrode Pads