Feature 1Good Conductivity: Lower impedance, more even current distribution, good conductivity, massage acupuncture point and relax muscle, make you feel comfortable. 2Multiple Applicable Parts: Suitable for multiple parts such as arms, legs, waist, shoulder, neck, back, etc. Help relieve stiffness and numbness, improve muscle pain. 3Fit Well: Self adhesive design, can be easily attached to skin, fit well, not easy to slip off, good therapy effect, important accessory for TENS machine. 4Non Woven Fabric: Multi layer structure, electrode pad adopts non woven fabric, safe and eco friendly, soft and skin friendly, reusable and durable for use. 5Electrode Patch Set: 12pcs of electrode patch are available, enough to meet your replacement needs. Small and light, suitable for home and massage shop.Item Type: Electrode PadMaterial: Non Woven FabricQuantity: 12pcs (6 bag)Hole Diameter: Approx. 2mm / 0.08inSize: Approx. 4.5 x 6cm / 1.8 x 2.4in .Package List12 x Electrode Pad (6 bag)NotePlease allow slight error due to manual measurement. Thanks for your understanding.