Smith Aluminum Adjustable Clamp-On Rod Holder offers a great alternative to stainless steel. This highly polished marine-grade aluminum rod holder will stand up to harsh conditions and harsher fights. The 100% anodized finish adds extra durability and style.• Fits 7/8" to 1" dia. rails• Inner Dia.: 1-5/8"• Measures 10"L x 3" dia. Fits 7/8"" to 1"" dia. rails 1-5/8"" inner dia. | C. E. Smith Aluminum Adjustable Mid-Mount Clamp-On Rod Holder, fits 7/8"-1" rails