These general purpose scissors are manufactured from stainless steel, and are 127mm long with a screw joint. Surgical scissors are made of stainless steel, and are 130 mm long with sharp points. Dissecting scissors are made of stainless steel, and are 115mm long with sharp points. Iris scissors are made of stainless steel, and are 90 mm long, with very fine points. The Angled Iris scissors are 115mm long.