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) ...
Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 2,2 cm ( about 0.8 inch) for each 2 bead chain 2 cm ( about 0.7 inch) ...