It looks like you're referring to a Thermomark Ink Ribbon, specifically the 25-WMSU model. This type of ink ribbon is commonly used in label printing applications, particularly with thermal transfer printers. These ribbons are often used to print text, graphics, and barcodes on labels, packaging, or other materials.
The model 25-WMSU likely refers to a specific size, type, or series of ink ribbons designed for use with a certain brand or series of printers, such as those made by Thermomark.
If you're looking for more specific details about this product (such as compatibility, size, or the type of printing it supports), I would suggest consulting the manufacturer's product documentation or contacting a supplier who specializes in thermal transfer ribbons.https://store.unigulfsupply.com/product/thermomark-ribbon-25-wmsu-ink-ribbon/