TWO CARD HOLDER - Holds two 30 mil (standard credit card size) ID cards - mifare, Iclass, PIV, CAC, TWIC and Frac cards RFID CARD PROTECTION - Shielded to protect info on 13.56MHz RFID Cards - Great for Corporate Access, University & School IDs, Public Transit, Hotel Key Cards, Payment, Gift Cards, Event and Conference Badges VERTICAL OR HORIZONTAL DISPLAY - Hard Plastic Slot Hole for Portrait or Landscape Hold - Attaches Well with Vinyl Strap Clip or Plastic Clips - Hang from Lanyard or Badge Reel Meets BAA (Buy America Act) & TAA (Trade Agreement Act). Made in USA EASY REMOVAL ACCESS - Thumb Notch Removal Openings on Both Sides of Holder - Slide out Fully or Partially for Scanning This durable and rigid 2-card holder features a dual-slot design, accommodating two standard credit card-sized (30 mil) cards with an insert size of 3 3/8" x 2 1/8" (86 x 54mm). Designed for RFID-enabled access and identification cards, it is compatible with many 13.56 MHz smart cards commonly used for secure entry, authentication, and transit systems. This includes access control badges, government-issued ID cards, mifare, Iclass, PIV, CAC, TWIC, Frac cards, and employee credentials, and key cards for office buildings, healthcare facilities, and transportation networks. The thumb notch groove allows for easy partial card removal for scanning, while the versatile design supports both horizontal and vertical display options, making it easy to attach to a lanyard, badge reel, or strap clip.