What kind of component is this? (picture)
I just bought a couple of surprise boxes from www.goldmine-elec-products.com, and they had a lot of these components.. Everything else in the box, I managed to identify and categorize, except these things..
What are they?
And what value do they have? they have a color code..
The coloring is: Black, purple, red, gold (or gold, red, purple, black)