Review on Camco Small Clamp Mounted Cup Holder - Securely Holds Beverages, Fits 1-1/4-Inch Rail - White (53086) by Maurice Malek

I bought this based on the description that it fits most sailboat rails and looks adjustable in the photos. Well it doesn't fit (too large a diameter in the holding part so it dangles) and it's not adjustable, the holding hole is MUCH larger than it looks in the pictures AND it can't accommodate a smaller diameter?! ?!? Seriously, who designed them? Unfortunately I couldn't get to the boat fast enough to test/install them, so I can't return them now. A "good" $30 wasted on two pieces of useless plastic trash. Arrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr...