The texture of the wire cord is hard using Stainlesss Steel. Material: 304 Stainlesss Steel. The handmade tool is small and convenient for makers. 6.0, 7.0,8.0, 9.0, 10 mm;. 2.2, 2.4, 2.6, 2.8, 3.0,3.2, 3.5, 3.8, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0,9.0, 10 mm;.