Marinebaby 360 Degree Adjustable Fishing Rod Holder Clamp on Marine Boat Rail Unique Modern Design: Fully adjustable, 360-degree rotation around Specifications: Length: 10" Inner diameter: 1-1/2" (38mm) Clamping Range: 7/8" - 1" (20mm - 26mm) Tube Rail Features: Material- Marine Grade 316 Stainless Steel, Polished to a bright mirror finish,Beautiful appearance, strong and durable Adjustable-360 degrees rotation around.Can be mounted to vertical or horizontal rails;Clamping Range: 7/8" - 1" (20mm - 26mm) Tube Rail?Please check as much as possible to make sure the item is the one that you need.) Robust Insert- protect your fishing pole from any wear against the stainless surface. Clamp on boat fishing rod holder? Trumpet Fishing Holder Boat Rod Holder Clamp to fit 7/8" to 1"(20mm-25mm) Tube Stopper slot -Gimbal Pin built into the base of the rod holder to located the rod butt into position. Dimention-Tube length:10 inch(258mm); white inner diameter:1.8 inch(46mm).Clamp range from 7/8 inch(20mm)-1 inch(25mm) Package Includes: 1 fishing rod boat holder Listing and template services provided by inkFrog