This is a drain screen for a bathtub/shower to catch hair and other detritus while allowing for proper drainage of the water. Measures approx. 40mm in diameter and should fit snug or slightly loose in a standard drain when inserted. Pull it out by the center stem to clean it and reuse it until it deteriorates.Print it at whatever layer height you please (I used 0.2mm) and slower is better. Should only take 30 minutes or so to print. Print as close to 100% infill as you feel comfortable. This ensures a good solid connection between the center stem and the screen. Place a drop of super glue on the underside of the screen at the center stem spot if you have troubles with the print strength at this location.