Straight 1/4" - Straight 1/4".
When it comes to speaker cables... Bigger is Better.
But don't look at the outer skin (which other dealers beef up to make it look like they're packing something potent), look at the size of the copper strand inside. The Fulltone SC-6 is 6 ft. of thick, 14 AWG very pure oxygen-free copper well-connected to beefy REAN 1/4" plugs to deliver a beautiful, full-range signal between your prized amp head and your favorite speaker box. There is no better or stronger speaker cable available anywhere in the world at any price. Your speaker cable for a lifetime.