The K75-10 and K75-24 are high quality PLIO (combined paper / lavsan in oil) capacitors made for military and using a dual dielectric technology. The hybrid dielectric contains both paper and polyethylene-terephtalate. Is oil saturated paper, glass sealed in a metal body. Known as Hi-End quality for audio applications.These capacitors provide excellent sonic characteristics, high tolerance is kept within a wide temperature range. These hi-voltage caps are very difficult to find items with their excellent sound quality.