Blade Tip: brass, copper, aluminum 0.2~2.0 mm / nickel silver 0.2~1.5 mm / unhardened stainless steel 0.2~1.0 mm. Blade Base: brass up to 3 mm / nickel silver up to 2.5 mm / copper up to 4 mm /aluminum up to 5 mm / unhardened stainless steel up to 2 mm.
