SMI 4-Arm Crab Trap Harness w/ Plastic Snaps - Eliminate the weak links, and crabbing becomes more productive. The SMI/Beau Mac 4-arm crab trap harness keeps your trap secure and easily retrievable, without the wear and tear that comes from tying your rope directly to the pot. For storage, just detach and keep with your line. Heavy-duty clips ensure many seasons of use. Keep your crab trap secure and retrievable. Eliminates wear and tear, easy to store. Each arm is 28 inches long and the snaps are 2 inches long.