White, white, white vial caps. These are the medium size, approximately 7/8 inch in diameter, that is, about 22mm. Fourteen ounces are available; I estimate about 60 pieces per ounce. Some are embossed with the familiar "flip off" phrase; some are plain; some are glossy; some are matte -- please see photos for details. If you're interested in the many other colors and sizes I have listed, naturally, the shipping cost will be adjusted accordingly.
Whether you're cranking out badge reels for friends or a fundraiser, or ready to move on to a more ambitious project -- such as a mosaic (see https://www.treehugger.com/culture/toronto-nurse-turns-medical-waste-stunning-mural.html) -- these will get your creative juices flowing!