Detectable Single Sided Portrait ID Badge Holders (Pack of 100)Description Our New and Improved Detectable ID Card Holders are now detectable with Metal Detectors and X Ray detectors. A special grade of stainless steel is converted into an ultra fine powder and mixed in when we manufacture our Holders. which then can be picked up by an industrial metal detector. The addition of X ray detectable the holders can be detected by X ray machines. They are also Antimicrobial Currently only available in Blue