Available in packs of 10, 20 and 50, having extra BACtrack replacement breathalyzer mouthpieces (sometimes called breathalyzer tips) makes sharing your BACtrack easy and sanitary. Made of FDA compliant, food-grade plastic, they are easily removable, washable and reusable. To clean, simply drop into soapy water, rinse, and air dry. Mouthpieces do not affect the accuracy or operation of your BACtrack, but they do make it easy and safe for testing others. Not compatible with BACtrack C6 and C8 personal breathalyzers.