Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 20cm ( 8 inch) 22 gauge ( wire diameter 0.6mm ) : 70cm ( 28 inch).
Soft copper wire : 20 gauge ( wire diameter 0.8mm ) : 2 x 5cm ( 2 inch) for each knot link 20 gauge ( wire diameter 0.8mm ) : ...