FOAM SWABS MEASUREMENTS - Total swab length: 5.1" (130mm), Head length: 0.9" (24mm), Head width: 0.5" (12.7mm), Head thickness: 0.34" (8.8mm), Handle length: 4.1" (104mm)， HIGH QUALITY FOAM CLEANING SWABS- These foam swabs construct from compressed, they are FREE FROM ORGANIC CONTAMINANTS. The absorbent anti-static head is lint-free for delicate cleaning, won't leave small fibers, and with strong solvent holding capacity, enables the swabs to resist from corrosion during cleaning and make fast absorption of contaminants onto the swab head. Long and sturdy handle provides good control of balance and excellent flexibility, not easy to break. USE for PRINTERS OPTICAL EQUIPMENT- Great for cleaning and maintenance of inkjet printer nozzle, photo machine nozzle, inkjet printer grating, microscopes, photo machine grating, camera, optical sensors. No static electricity, low volatility, no damage to the nozzle and grating. EXCELLENT MULTI PURPOSE FOAM SWABS- More widely use for cleaning printers, electronics, keyboards,clean guns, cameras ， PCBs，car like vents,cleaning tape heads,auto and aviation applications, banking machines, gaming machines, A/C vents and vents around your kitchen range，cleaning out any crevice.can also be used in paints and solvents, home coating projects, crafts, etc.