Self-Saturated Cleaning Swab - 4.5’’ Packing : 25 swabs per Zip-lock bag ; 50 swabs/box Nominal Size Dimension : 4.5’’ Part Number : IPASS-4.5   Features & Benefits - 100 ppi , open cell polyurethane rectangular foam tip. - Non abrasive. - Foam is sealed directly onto the plastic handle without use of adhesive to make it more environmental friendly. - Easy handling - Excellent for removing ink stains, adhesive residue , and debris on the print head.   Applications - Computer keyboards. - Optical and magnetic head devices. - Electronic components. - Thermal Printers (card printers, barcode printers, label printers, receipt printers) -  Inkjet printers   Characteristics The plastic handle on the swab is filled with 99.9% IPA solution. Simply squeeze or snap the plastic handle and the foam head becomes saturated with just the right amount of cleaning solution. Clean the Thermal Print Head by using a back & forth motion to effectively remove dirt and debris accumulated on the print head thus extending its life and maintaining a readable image.