Brady M71-38-423 BradyBondz 4" Width x 1.9" Height White Color B-423 Permanent Polyester Labels With Gloss Finish For BMP71 Label Printer (100 Per Roll) Applications Include circuit board and component ID, general and industrial identification, general identification, panel identification, through hole - top Recommended ribbon series is M71-R6000 BK and acceptable ribbon series are M71-R6200, M71-R440-WT, M71-R6900 (colors) Label measures 4" width by 1.9" height and printable area measures 4" width by 1.9" height Smooth surface Brady B-423 is UL recognized for outdoor use on glass, thermoset polyester plastic and polyvinyl fluoride plastic surfaces to support solar panel identification applications