Combined Label and Ribbon Cartridge, Compatible Grainger Part Number 21U174, 21U176, 21U177, 21U178, 21U179, 21U180, 810HX3, 810HX4, Compatible Mfr Part Number BMP51, BMP53, M511, M511-KIT, Label Color White, Label Finish Matte, Label Height 1/4 in, Label Material Polyester, Label Width 1 3/64 in, Material Properties Autoclavable, Printer Series Compatibility BMP51, BMP53, M511, Ribbon Color Black, Roll Length Not Applicable, Vial/Tube Size Not Applicable