Constructed from high-quality compressed open-cell polyurethane foam securely bonded to a polystyrene shaft, these swabs are crafted to handle delicate and precise cleaning tasks without leaving behind residues. These versatile swabs are for a myriad of applications beyond electronics; efficiently clean keyboards, Phones, detailed printer heads, and other intricate components with ease, ensuring optimal performance of your devices. Ideal for maintaining sensitive equipment, our swabs are specially designed to be compatible with cleaning solvents. They are for use with inkjet printers, laser printers, optical microscopes, and other laboratory instruments. An indispensable tool for home maintenance, these swabs adeptly navigate into narrow and hard-to-reach spots in air conditioning vents, kitchen appliances, and automobile , making cleaning less of a chore. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:Black Material:Plastic+Sponge Size:About 130x15mm Package Contents: 400 x cleaning swabs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.