"C.E. Smith Aluminum Adjustable Clamp-on Rod Holders offer a great alternative to stainless steel. These highly polished C.E. Smith rod holders bring marine-grade aluminum construction to stand up to harsh conditions and harsher fights. Their 100% anodized finish adds extra durability and style, making C.E. Smith Aluminum Adjustable Clamp-on Rod Holders an attractive option. Fits rails with 1.05"" OD. Marine-grade, anodized-aluminum rod holders Great alternative to stainless steel rod holders Fits rails with 1.05"" ODFor more information, view the C.E. Smith Aluminum Adjustable Clamp-On Rod Holders Size Chart"