750 mL wine bottles. Flint (clear) color, claret (Bordeaux) style. 28 mm screw top finish (28/400 thread). Flat bottom. Sold in cases of 12 with dividers. Screw caps included.
Extra caps available at link: https://amazinggrainshomebrew.com/products/metal-screw-cap-28-mm-pack-of-25?_pos=4&_sid=c53d36a81&_ss=r