its 24g, 0.25 ohm, 1/16th id. but 26 or 28g is fine, there are far more important variables than how tidy a coil is, gauge of wire used depends on what ohms you need, i dont know what ohms you use but if you use 20, 22 or 24 gauge at say 0.4ohm + it will be slow to heat up and not worth the effort.
You should make your own coils, get som drill bits 1/16th to 1/8th and get a set of pin-vises that will hold those size, i bought a set of four vises from ebay that hold any size i need and will get you tight coils with a little practice
Dont buy coils