High Quality:Portable cup holder made of sturdy 316 stainless steel ,strong, sturdy, and anti,not easy to crack and aging, superior corrosion resistance .ensuring a long lasting life for your boat or yacht. Practical:These Stainless Steel Rod Holders are Can adjust the angle arbitrarily, Can be installed on various types of boats, ships or yachts, providing its utility across different watercraft, and becoming a practical tool at sea. Widely Applicable:Boat drink holder can hold water bottles, coffee cups, beer, cans, glas and so on.Keeps your drinks readily available.Suitable for Yacht, Pontoon boat, bass boat,so on. Easy to Use:Insert boat cup holder to use the cup holder, with no drilling needed and no damage to your boat, providing convenience and practicality for your trips.It can hold your drinks, gadgets, pliers, knives,fishing lures,and more.keeps tidy. Size: inner diameter: 3.6 inch; / 9.3cm, bottom: 2.83 inch; / 7.2cm, cup holder height: 4.1 inch; / 10.5cm.boat rod holders hight:6 inch/15cm,pipe diameter 1.5 inch/3.8 cm.