MEASUREMENTS - Total swab length: 5.1" (128mm), Head length: 0.9" (24mm), Head width: 0.5" (15mm), Head Thickness: 0.34" (8.8mm), Handle Length: 4.1" (104mm) GOOD QUALITY- Every foam swab head is made from the highest quality open-cell foam securely bonded to a polystyrene shaft. GREAT FOR USE - Our swabs are perfect toClean printer heads, keyboards, and tight to reach places,great use for piezoelectric photo machine print nozzles,water-based and most solvent printhead. MULTIPLE USES - Swabs are also great to use around the house such as A/C vents and vents around your kitchen range. USE FOR PRINTERS & OPTICAL EQUIPMENT - This Foam Cleanings Swabs are made specifically for cleaning sensitive equipment such as printers, microscopes, optical sensors and safe for solvent print heads.