C.E. Smith Aluminum Vertical Clamp-On Rod Holder 1-5/16" OD White Powdercoat w/Sleeve [53716]Aluminum Vertical Clamp On Rod Holder 1 5 16" OD White Powdercoat with Sleeve Smith's line of high polished aluminum 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. These rod holders feature a super strong 3 8" thick blade, rugged welded 1 3" tall gimbal bar, and a 1 5 8" inside diameter with a flared opening to make