Black on White, DYMO-LW Fixed Length Series: Three proof Label with Patent Structure, 19mm Width and 51mm Length (500 pcs/roll White Return Address Labels), Compatible with DYMO 30330.

Can be used with:

LabelWriter 320/LabelWriter 330/LabelWriter 330Turbo/LabelWriter 400/LabelWriter 400Turbo /LabelWriter 400 Twin Turbo/LabelWriter 450/LabelWriter 450TuRBo/LabelWriter 450Duo/LabelWriter 450 TwinTuRLo/LabelWriter SE450/LabelWriterWireless