Draw straight lines or precise angles using this aluminum triangle set by Artist's Loft. You can use these calibrated triangles for your craft and drawing projects. They are sturdy and convenient to use. Details:Calibrated triangles6 packs (2 triangles per pack, 12 total triangles)Tempered aluminumPack Contents:45°/90° triangle (6")30°/60°/90° triangle (8")