S-721H is formulated to safely remove tape oxides, soils, oils, waxes, greases, adhesives and other contaminants from audio tape heads, video tape heads, tape guides, capstans and pinch rollers. S-721H's low surface tension and excellent wetting of surfaces allow superior penetration of critical tape head micro-gap area while promoting extended life and healthy texture to pinch rollers. S-721H is designed for use on all types of digital and analog tape recorders. A clean tape path will insure high quality recording and playbacks. 4 ounce bottle.