Recommended boat size - 50 to 60 Feet Made in the USA for heavy duty marine applications Injection molded ends tested to 2000 psi tensile strength, featuring large line holes to fit most ropes and shackles Tri-valve for easy inflation with football needle or compressor Constructed from flexible and resilient marine grade vinyl Tuff End fenders feature a seamless one piece construction, the strongest in the industry Feature large line holes that will accept most ropes and standard shackles Injection molded ends tested to 2000 psi tensile strength Tri-valve for easy inflation with football needle or compressor Constructed from flexible and resilient marine grade vinyl Tuff End fenders feature a seamless construction, the strongest in the industry