CRC Freeze-Off® Super Penetrant uses “freeze shock” technology to crack through rust, parts, and equipment corroded by the elements, to loosen seized bolts and locked up nuts loose again. Packed in a light, aerosol can, its trouble-free application guarantees fast and effective results with innovative chemical technology. Low VOC formula. The freezing spray is ideal for use on automobiles, boats, watersports equipment, household items, plumbing fixtures, agricultural equipment, sporting goods, n