Precut Label Roll For Print Method Thermal-Transfer Compatible Grainger Part Number 21U478 Compatible Mfr Part Number B30-R6400 Label Color White Label Finish Matte Label Material Polyester Label Width 1/2 in Labels per Roll 1 500 Printer Series Compatibility BBP33 i3300 Vial/Tube Size 2.0 mL Adhesive Properties Permanent Adhesive Material Series B-492 Recommended Ribbon B30-R6400 Resistance Properties Chemical-Resistant Smear-Resistant