Fits any stack of four rafts or any stack which equals a capacity of 21 man or more.
For example: a 12 man size raft and two 6 man size rafts would equal 24 man size and would require only one #504 unit for the three rafts.
Each unit contains 1 stainless steel cage, 100 ft of black 7/16" polypropylene rope (3,000 lb test) and 1 wire link.