RZR cupholder for grab bar is designed to fit a yeti tumbler. the inserts are for different sized drinks. the small for skinny cans the large for normal cans the XL for bottles and bigger cans and the Brumate for a brumate koozie. I print face down with the first layer normal 3 walls. then every layer after that is 20 perimeters and 75% infill. you will need a 1/4-20 hex nut that is 1" long. you will need at min the base and the knob.