Various caps for use in replacing the stock electrolytic caps in the power supply of the Bottlehead Crack. Left to right: Icar 200uf metalized polypropylene; Temco 100uf oil-filled motor RUN cap; soda can (sorry, all I had handy); Chinese motor START capacitor. Note that the small blue cap with Chinese characters is a motor START cap and therefore NOT suitable for use in the Crack. I bought them by accident and they are shown here just for the fun of it. If you try to install them, they will explode.