Remove dust, dirt, magnetic buildup from tape heads, capstans, and magnetic disc surfaces, fast and easy! No Residue. Presaturated pad (91% isopropyl alcohol and 9% deionized water) is non-abrasive and lint free. 100% polyester. Evaporates quickly, so your equipment is ready to use! Premeasured. Single use assures no cross-contamination of equipment. 80 pads/box.