Zetek 100pcs Foam Tip Cleaning Swabs Sponge Stick for Inkjet Printer, Printhead, Camera, Cleanroom, Optical Lens, Gun, Automotive Detailing, Optical Equipment Foam Tip Width 0.204" - Foam Tip Thickness 0.197" - Foam Tip Length 0.669" Swab measures 3.6 long High quality foam cleaning swabs Anti-Static Foam Swabs for cleaning printer, computer, optical instrument camera lens, and all solvent printhead, such as Roland, Mimaki, Mutoh Epson printers. Constructed from compressed, 100 ppi(Z) open-cell polyurethane foam that is free from organic contaminants such as silicone, amide or DOP