This is the Zeagle Lightweight Thumb Reel for Scuba Diving Features: Compact reel 115 feet of nylon line Double ended brass clip This light weight plastic thumb reel is a small, low profile item that is easily stowed when not in use. This thumb reel comes with 115 feet of white nylon line as well as a double ended brass snap that can be attached to the many openings on the perimeter of the reel. Use along with a signal safety tube to deploy at your safety stop in choppy conditions so the boat can get to you quickly. Or use to tow a dive flag in shallow dives.