Black on White, DYMO-LW Fixed Length Series: Three proof Label with Patent Structure, 51mm Width and 589mm Length (500 pcs/roll), Compatible with DYMO 30374.

Can be used with:

LabelWriter 450/LabelWriter 450 Duo /LabelWriter 450 Turbo/LabelWriter 450 TwinTurlo/LabelWriter 4XL/LabelWriter SE450/LabelWriterWireless