Label and Ribbon , Compatible Grainger Part Number 21U174, 21U176, 21U177, 21U178, 21U179, 21U180, 810HX3, 810HX4, Compatible Mfr Part Number BMP41, BMP51, BMP53, M511, M511-KIT, Label Color White, Label Finish Gloss, Label Height Not Applicable, Label Material Vinyl, Label Width 1/4 in, Printer Series Compatibility BMP41, BMP51, BMP53, M511, Ribbon Color Black, Roll Length 25 ft, Vial/Tube Size Not Applicable