This is an Avast PVC electrical insulation tape in black, 18 mm wide by 20 m long with a 180 micron (0.18 mm) thick film. PVC insulation tape is the everyday consumable for insulating and protecting cable joints and repairs, bundling and tidying wiring looms, sealing the ends of cable runs and colour-coding conductors or cable lengths. Black is the general-purpose colour and the most common choice for insulating joints and finishing off repairs, while other colours are normally used for identification. In the AV and events trade it is also used to tidy multicore tails, bind cable ends and hold labels in place on cable looms. The flexible PVC backing stretches to conform around irregular shapes such as connectors and splices, and the tape can be torn by hand without tools. The roll is a standard 18 mm x 20 m size that fits common tape dispensers and tool pouches. Avast lists a matching white version separately. Detailed adhesion, temperature and voltage ratings were not published in the sources checked, so confirm them with the supplier if a specific rating is required for your application.