intex excursion 5 inflatable boat Cup Holder. Its make for a 12oz beer or coke can. I made it to hold the beer nice and snug. There are 2 versions, 1 is to be printed all in one peace and the other comes in 2 parts, ment to be hot glued together or any kind of glue.

Be sure to rotate the part by 180 deg for the all in one part