This 31.0mm black-on-yellow heat shrink tube cartridge delivers clear, durable labelling for pipes, cables, and wiring. Compatible with Brother PT-E300VP, E550WVP, D800W, P750W, P900W, and P950NW label makers, it shrinks evenly to provide a secure, professional finish that withstands heat, moisture, and abrasion. Ideal for industrial and electrical applications, it helps you maintain organized and easily identifiable setups with lasting clarity. Upgrade your labelling projects with reliable results every time.