Boating Essentials - Universal Rod Holder - BE-GE-52227-DPBoating Essentials Universal Rod Holder BE GE 52227 DP This universal rod holder from T H Marine installs in almost any application and fits on both round and square rails. Flush mounts on horizontal surface. Universal Mounting Rod Holder Fits on Round or Square Rail Flush Mounts on Horizontal Surface Rod Holder Adjustable 360 Degrees Installs in Almost Any Application