Vintage Sprague ceramic capacitors, NOS, new. Functionality confirmed with a tester and guitar; values are good. .03 100v. Ideal for P90s, humbuckers you want to slightly mellow out, and single coils you want to brighten up a bit in a guitar. Also suitable for other electronic components. 3 in stock. Sprague ceramic capacitors. Compared to their Wax and plastic types, these are newer in terms of manufacturing year and have a slightly sharper sound image. However, they are a popular capacitor because many guitars of the time used ceramic capacitors as original equipment.