This is a Multipack containing 6 Indelible Pennarelli (Permanent Marker) of high quality Staedtler Lumocolor 352 line. All markers are black ink and have a tip with a thickness of about 2 mm, ideal for a sturdy and legible trait. The Lumocolor ink is known for fast drying, water resistant and strophine, and adheres permanently to almost all surfaces, including plastic, glass, metal, paper and cardboard. This set is perfect for intensive use in professional environments, in stock, for labeling or for technical and artistic design. Main technical specifications Brand: Staedtler Model: Lumocolor 352 Permanent Marker Quantity: 6 Pieces (Multipack) Type: Indelible marker (Permanent) Color Ink: Black Toe Thickness: Approximately 2 mm (Middle/robust) Features Ink: Quick drying, water resistant and light resistant, does not droop. Compatible surfaces: Universal (Carta, plastic, metal, glass, film, etc.) Ideal use: Marking, labeling, permanent writing for intensive use.