KUFA Sports trolling snubbers with Cannonball snap are equipped with a ball bearing swivel on one end and a quick release snap on the other end. Choose the right length for your trolling need. We offer the trolling snubber with Cannonball snap in three different lengths from 15", 20" and 30". Using a snubber makes retrieving your cannonball easier on your hands and safer. Helps keep the ball in the water while you change or attach your lures to your downrigger clips.