Vintage Sprague ceramic capacitors. Tested and working with a tester and guitar, with good values. .1 50v. For guitars, it's best suited for single-coil pickups like those found in Telecasters, with a .1 value. Also suitable for other electronic components. Sprague ceramic capacitor. This has the same value as the original capacitor in a Fender '61 ST. Compared to the company's Wax and plastic types, the sound is slightly sharper, and the manufacturing year is newer. However, it's a popular capacitor because many guitars of the time used ceramic capacitors as original parts.