Description: Free to change direction, 360 °swivel adjustment range for a variety of rod tip height settings Quick and easy to install on the kayak or boat firmly and securely 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 Specification: Material: 316 Stainless steel Base Size: Approx. 3.46 x 2.13 inch/88 x 54 mm Two screw holes center spacing: Approx. 3.46 inch/32 mm, 2.6 inch/66 mm Screw Hole Diameter: Approx. 0.24 inch/6 mm Big Hole Inner Diameter: Approx. 2 inch/51 mm Height: Approx. 3.74 inch/95 mm Color: Silver Package Includes: 1 Piece Boat Fishing Rod Holder