Advantus Secure Two-Card RFID Blocking Badge Holder, Maximum Insert Size: 3-3/8 x 2-1/8 Inches, Black, 20 per Pack (76417) Office Supplies Secure personal credit, debit and business ID card information by shielding from unauthorized and unknown access. Offers full access for quick and easy removal of cards from blocking material. Secure two-card RFID-blocking badge offers full access for quick and easy removal of cards from blocking material. Advantus Security Card Holder Advantus 76417 Secure-two Card RFID Blocking Badge For Sale Online Black Badge Holders Bulk With a maximum insert card size of 3.38 H x 2.13, this holder is crafted with durable plastic, offering versatility in both horizontal and vertical... Holder offers full access for quick and easy removal of cards from blocking material Protect against identity theft with a card holder that blocks radio frequency identification (RFID). Heavy Duty Retractable Badge Reel with RFID Blocking Badge Holder Maximum insert size is 3-3/8 x 2-1/8 inches (86 x 54mm) , 20 per pack