Vintage Bumble Bee capacitors. Tested and confirmed working with a tester and guitar. .01 400v Classic, popular value. Ideal for humbuckers in guitars. It cuts through slightly less than the popular .022, but many people prefer it. Also suitable for other electronic components. Bumble Bee capacitors are famous for being original parts in old Gibson guitars. It's not just old Gibson enthusiasts who like to talk about them; they actually dramatically change the sound. Among them, Bumble Bees create a swell in the mid-range. This is unique to old Bumble Bees. It's also different from current Bumble Bees. In terms of bite, including Wax types, Bumble Bees are the best.