RFID Labels, Zebra Polyester, Specialty, 3.94" x 0.51" (100.1mm x 13mm), Thermal Transfer, Permanent Adhesive, Silverline Slim M4i Inlay, 3" Core, 8" OD. 800 Labels/Roll, 1 Roll Per Case, Priced Per Case. Compatible With ZT411 RFID Silverline Printer.