.001" Copper - Tears with fingers, cuts with scissors, often used in scrap booking or other paper-thin crafts.

.003" Copper - Doesn't tear with fingers, cuts with scissors, shapes by hand.

.005" Copper - Cuts with scissors, shapes by hand, retains shape but with some malleability - an excellent grade for tooling because of its pliability. Indents with a light touch but it will not hold shape if pressure is applied.

.010" Copper - Cuts with scissors, shapes by hand, makes 90º bends by hand, retains shape well.

.016" and .020" - Need metal snips to cut, can be bent by hand, though 90º bends by hand are difficult.