If you use reels for your diving activities than having spare reel line is one handy item to have on hand. Manta offers 3 sizes of line in varying lengths. Manta's One Pound of Line is available in 700' (213.36 meters) #24 line, 600' (183 meters) #30 line and 350' (106.68 meters) #36 line. All three lines are braided nylon line for durability and long life. One Pound of Line makes a great Save-A-Dive Kit Item.