This Dymo LetraTag Labeling Tape is compatible for LetraTag Label Makers, Black print on White tape,(12mm) 1/2'' W x (4m)13' L, 1 roll (91201) Make easily visible paper labels that adhere easily to common surfaces such as paper and glass. Thermal printing requires no ink or toner; Cassettes can be changed rapidly for your convenience while you are working to finish a project; Label maker tape for use with DYMO LetraTag and LetraTag QX50 Label Makers.