Self Expiring Clip-on Backpart, Box of 1,000 (P/N T590X)Self Expiring Clip on Backpart (P N T590X) The clip on backpart is designed with a colored header for color coding recognition. The size is 3" x 3 and works with our Timebadge one day frontpart badges (sold seperately). Sold in packs of 1000. These backpart badges will activate when a frontpart badge is placed on top by showing red diagonal lines to indicate expiration void. Controlling your visitor management is very important in today's world. You