Soft copper wire 20 gauge ( wire diameter 0.8mm ) : 50cm ( 20 inch) You can use 0.6mm - 0.8mm wire ( 20 gauge - 22 gauge ) ...

(can + a few centimeters to depreciate) 20 gauge ( wire diameter 0.8mm ) : 3 x 40cm( 16 inch), 15cm( 6 inch), 50cm( 20 inch) ...

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