The Scotty #374 Sure Stop Terminal Kit comes complete with over eight feet of custom 240 pound test black nylon seine twine, a 100% stainless steel crane swivel with a load rating of 411 pounds and a heavy duty coast lock terminal end. The gunmetal black crane swivel found in our #374 Sure Stop Kit is three times stronger than a brass swivel! You attach your downrigger line (Stainless steel cable or braided line) directly to the heavy duty crane swivel and the swivel itself becomes the stopper bead for the auto stop on the downrigger. The Sure Stop Terminal Kit works extremely well when using braided downrigger line and ensures that your downrigger ball will stop short of the pulley...every time. This product is a must for the serious downrigger fisherman.