Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 3 strands 7 cm ( about 3 inch) for middle braid 6 cm ( about 2.4 inch) ...

Full tutorial video link above the title The size of wire used depends on the hole of the bead and the wire you have. The larger the wire, the stronger it is A single braid can use 20 gauge - 18 gauge ...