This is a Slow Blow 3AG 2-1/2 AMP fuse that can serve as a replacement fuse for Fender and other vintage amplifiers. Also known as a time delay, these fuses open after a few seconds when your amplifiers is overloaded with current. This small fuse is your first line of defense in ensuring your favorite amplifier doesn't get destroyed from a simple wiring issue.

This fuse can also be used in the original Fender Twin Reverb.