Constructed from compressed open cell polyurethane foam which is securely bonded to a polystyrene shaft. Perfect to clean printer heads, keyboards, and tight to reach places, great use for piezoelectric photo machine print nozzles, water-based and most solvent print head. Multiple uses: Swabs are also great to use around the house such as A/C vents and vents around your kitchen range. Specifically for cleaning sensitive equipment such as printers, microscopes, optical sensors and safe for solvent print heads. Used in the electronics, semiconductor, hard disk drive, Optics-electronic, LCD,PCB,SMT, IC, and biotech industries. Head width: 0.5inch (15mm) Colour:orange Material:PP+sponge Size:about 130 x 15mm Package Contents: 100 x Cleanroom Detailing Swab / 200 x Cleanroom Detailing Swab 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.