Needed a sink plug for the laundry sink to bathe my pug. Home Depot didn't carry the right size. Designed to fit 1.25" to 1.75" drain hole with a strong ring for a beaded chain. Edit 1: Replaced STL with a 50% scale version because Repetier Host seems to import it too large despite exact dimensions in FreeCad. FreeCAD file is attached if you want to make alterations. Print with 40-50% infill and 3-4 permimeter and do whatever you can to prevent warping with ABS (ABS/Acetone slurry). Can also be sprayed with rubber coating for a 100% watertight fit, but it works in fiberglass sinks without the coating.