P-Line Dura-Max Hi-Speed Rolling Treble - Designed specifically for trolling, these rolling trebles will prevent line twist under high speed situations. They are an economical alternative to expensive ball bearing swivels. They are constructed of quality steel for strength and black in color to avoid spooking wary gamefish. These swivels are assured to to help you land that big fish of a lifetime. Quality steel constructionKeeps line from twistingBlack in colorHi quality, value pricedThree roller design