Bought a box of these cables when Dixie International went out of business. Couldn't find them in a catalog but from the label ecl stands for extended clutch cable. H is for Honda. 450 k 6 stands for the CB and cl 450 in the early 1970s. 15-in means it's 15 in longer than stock. Please keep in mind that we're not sure the exact years this fits but pretty sure it fits all the five-speed models. In the mid-60s they made a four-speed model and I don't know if it's the same cable. Also this is 15 in longer than stock which means you use these when you have high handlebars like ape hangers. Also keep in mind that this is older inventory that's been sitting in a warehouse for decades