EKG Red Dot Resting electrodes, by 3M, are disposable sensors for patients who receive EKG diagnostic testing while they are at rest. These are quality electrodes with strong adhesive backing that stays on and provides accurate EKG traces -- even on skin sites that are uneven or unusually contoured. These 3M electrodes are of the extra large variety, measuring in at 1.2 by 0.8 inches. They have a pressure sensitive conductive adhesive that is trusted for critical diagnostic applications in any hospital or clinical setting. The lead wires simply attach by clipping the tab ends to the lead wires. The EKG Red Dot Resting electrodes are ideal for 12-lead EKG applications . They are fabricated with a semi-stiff foam backing that is comfortable and gentle on the skin. Applying them is as easy as pealing the adhesive backing off and pressing on freshly cleaned skin. They provide rapid and intimate skin contact to ensure quality trace pickup, meaning less signal noise to get the most accurate diagnostics data. The adhesive is strong and will save the clinicians time and facility cost of readjusting due to the reliability of its performance. Red Dot electrodes will fit well in cardiac rehab settings, cath labs, EMS/ER rooms, ICU and CCU departments or any other medical area where heart monitoring is needed. They are radiolucent so they can remain on the body for most radiological imaging applications.