Description: The rod holder mounts on vertical or horizontal rails from 3/4" to 1" in diameter Uses a clamp on design that allows for easy relocation Attached 2 pieces rubber gasket, can grip the rail and prevent damage to the rail Adjusts 360 degree and locks at any angle With drain holes in the bottom allow water to escape Professional marine grade cast 316 stainless steel Strong corrosion resistance and durable in saltwater circumstance High polished surface for mirror-like appearance and to match modern watercraft/boat/yacht Tube lined with UV resistant black PVC No drilling is required for installation Specification: Material: 316 Stainless steel Color: Silver Length: Approx. 9.13 inch/23.2 cm Hole Inner Diameter: Approx. 1.65 inch/4.2 cm Suitable for 3/4 inch/19 mm, 0.87 inch/22 mm , 1 inch/25 mm rail Package Includes: 1 Piece Boat Fishing Rod Holder 2 Pieces Rubber Gasket 1 Piece Wrench