Tuff End buoys feature heavy-duty seamless construction to meet the punishing demands of the commercial marine industry. Tuff End buoy ends are made from injection molded vinyl tested to 2000 psi tensile strength, the strongest in the industry! Tuff Ends feature large line holes that will accept standard shackles and allow rope as thick as 1/2" or even 5/8" to be threaded through twice. The curved design hole prevents chafing. Eyelet shape designed with a taper to allow the attachment of a standard shackle Patented Trivalve TM does not require removal to inflate. Injection molded ends tested to 2000 psi tensile strength. | Tuff End Buoy, Orange (21")