1m 0.1mm x 180 strands litz wire, 180/38
1m 0.1mm x 120 strands litz wire, 120/38, multi-strand twisted enameled wire
1m 0.1mm x 25 strands litz wire, 25/38, multi-strand twisted enameled wire
1m 0.1mm x 1650 Strands litz wire, 1650/38