Compatible with brother td4000,zebra,citizen,argox,tvse,tsc,endura,casio,dumo thermal label printers. Label size: 4" x 6", core diameter: 1",across 1 up. Total label: - 250. Uses heat technology, work in both type of barcode printer:- direct thermal or ribbon barcode printer ideal for warehouse, shipping, or barcoding applications. Self adhesive.