Precut Label Roll, For Print Method Direct Thermal, Compatible Grainger Part Number 23M340, 4NHL6, 4NHL7, 506L38, Compatible Mfr Part Number 1752264, 1752265, 1752266, 1755120, Label Color White, Label Finish Semi-Gloss, Label Height 1 1/4 in, Label Material Polypropylene, Label Width 2 1/4 in, Labels per Roll 800, Printer Series Compatibility 450, 450 Turbo, 4XL, LabelWriter, Vial/Tube Size 57MM X 32MM, Adhesive Properties Permanent Adhesive