*USE FOR PRINTERS & OPTICAL EQUIPMENT - Polyester Swab Cleaning Swabs are made specifically for cleaning sensitive equipment such as printers, microscopes, optical sensors and safe for solvent print heads such as Roland, Mimaki, Mutoh Epson printers. *SAFE MATERIAL- Constructed from Double-layer microfiber that is free from organic contaminants such as silicone, amide or DOP. *GOOD QUALITY- Every microfiber swab head is made from the highest quality Double-layer microfiber securely bonded to a polypropylene shaft. *MULTIPLE USES - Swabs are also great to use for gun cleaning *GREAT FOR USE - Our swabs are perfect to clean printer heads, keyboards, and tight to reach places, great use for piezoelectric photo machine print nozzles,water-based and most print head.