The mast assembly consists of three aluminum pieces. The mast is 1 1/8 inch in diameter, the two spars are 3/4 inch in diameter and 10 ft long. These are the ones that keep the sail straight and stretched. Hardware and rope, in addition to the Sea Snark hull are included, the sail isn’t. This sail assembly can be used on some other small boat, canoe, DIY, and so forth. All you wish to have is a 1 1/8 inch hole in plywood and let the wind do the be just right for you. The rope coming from the top of the mast connects to the spar where the correct arm of the man within the picture is, vertical with the individual. The aluminum mast, pulleys and spars are in good condition, the rope is fair. Local pickup only.