Aluminum Horizontal Clamp-On Rod Holder OD - White Powder Coated with SleeveC.E. Smith's line of white powder coated clamp-on rod holders offer a great alternative to stainless steel. These rod holders are constructed of marine grade aluminum that has been 100% anodized for functionality and style.Features:. Style: Horizontal. Fits rails with 1.66" measured OD. Made from Marine Grade Aluminum. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.