Staedtler 12CT Triangular Colored Pencils (1270 C12A603ID) STAEDTLER premium quality colored pre sharpened pencils. 12 Brilliant colors . Triangular easy to grip ergonomic barrel for added comfort. Easy to sharpen 2.9 mm color core. Triangular easy to grip ergonomic barrel for added comfort. Easy to sharpen 2.9 mm color core.