Adhesive Disk Electrode Washer with Tab, 8mm ID x 22mm OD, 500 packElectrode washer. Secures electrodes and sensors in place. ID = center hole diameter, OD = outside diameter.SKU: E410-500 $30.00 Qty: Add to cart Ship toSelect countryUnited States of AmericaUnited States of AmericaUnited States of America *Other *Shipping MethodNameEstimated DeliveryPriceNo shipping optionsApply Custom wishlist OKAdd to wishlistAdd to compare listEmail a friend