2.5mm Fibre Optic Foam Swab. This 2.5mm Fibre Optic Foam Swab from ITW Chemtronics is an ideal choice for FTTH (Fibre To The Home), CO (Central Office), or Data Com applications. Flexible swab head conforms to connector face This Fibre Optic Foam Swab offers outstanding particle entrapment No adhesives, binders, or fibres that can leave residues Open-cell structure gives the best solvent holding capacity, enabling less solvent to do more work. Can be used with from ITW Chemtronics Electro-Wash® PX Precision Cleaner for all contaminants and soil types.