Don't use Chinese cotter pins. I unwittingly conducted a perfect objective product evaluation. After retuning the rig last fall, I decided to use new cotter pins so as not to deal with the bent and twisted old ones. My shrouds use two sizes, 1/8 and 3/32 so I bought a pack of each, same brand, same store, same price. This winter I noted the 1/8 pins were litertally dripping rust down the turnbuckle, yet the 3/32 ones were fine. So I go back and look at the packages and find the 1/8 made in USA and the 3/32 made in China. As I removed the Chinese pins they broke in half, not where they were bent, but inside the screw bolt. I guess they would have eventually just fallen out, so I should be thankful for the dripping rust as it provided a timely warning of impending failure.