The sizes of wire i work with range between 16-18 gauge and that's what i used for the washers that are on the chokers! All four pieces fasten with toggle clasps and the length of these pieces are as follows
Purple: 25 inches
Green: 20 inches
Blue: 19 inches
Red: 27 inches
Upon purchasing, please leave a note in notes to seller as to which choker you would like to have sent to you.
If buying all four, please convo me for price.
Thanks for looking!