Birdsall Marine offers two styles of pipe mounted drink holders. One has a plastic cup and the other has a stainless steel cup. Both holders are designed to mount on pipe that is 1 1/2 inch diameter or larger.

Overall dimensions:

Stainless Steel cup = 4 1/8 in wide x 4 3/4 in deep.

Plastic Cup = 5" in wide x in 5.5" deep