This selection of caps is for building effects pedals and amplifiers. Also see our Ceramic Caps for Guitar.
These are the same high quality capacitors used by JHS Pedals and other leading makers of fine electronics.
Electrolytic capacitors are polarized, so their positive/negative leads must be installed in the correct orientation. The positive lead is longer than the negative. Ceramic and Film capacitors are not polarized, and can be installed in either direction.
Capacitance is measured in microfarads (uF) and picofarads (pF). A microfarad is one millionth of a farad; a picofarad is one millionth of a microfarad.