Mildenberger - Syllable Pens - The Original Colouring Pencils for Writing in Syllables, Two Tone (Red and Blue), Triangular, Lead Diameter 5 mm Thick, Pack of 12 : KORES Deutschland GmbH: Amazon.de:
Amazon.com : STABILO All-STABILO Colored Pencil For Film & Glass, Black : Wood Colored Pencils : Office Products