We use the trusted, high quality Dr. Slick 6" Clamps to mash down the barbs on flies and to help remove the flies from the fish so they are not harmed. Some people use the black clamps because they do not glare in the sun but that is a personal preference. All Dr. Slick Clamps are very durable and useful on the stream. The Dr. Slick 6" Clamp are our go to clamps for bass and large trout fishing. These clamps perform flawlessly mashing barbs on streamers, large nymphs, popping bugs and larger dry fly patterns.