Made particularly for use with Master C-stands, the Kupo Turtle Base - Black is a reliable replacement part. It features a zinc-alloy base casting that is five times stronger than aluminum. This helps it support the weight of people standing on it, as well as that of heavy sandbags. The hollow junior pin receiver lets debris pass through so that cleaning and maintenance don't become a hassle. The patented spring-ring locking system allows you to open and close the base in no time.