Fits the holes in the IKEA VÄXER hydroponics system: https://www.ikea.com/se/sv/catalog/products/20318724/ The systems currently sold at IKEA in Sweden are white and not grey as on ikea.com which were almost perfectly color matched to my white add:basic PLA from AddNorth which now seems to have been replaced with E-PLA: https://addnorth.se/en/shop/product/ANEP17WHI