Pica VISOR PermanentRefillable high-tech marker with ergonomic twist mechanism * With water resistant "MULTI-USE" marking crayon * Extremely insensitive and versatile for water resistant marking on almost all surfaces * Most economic: 1 lead substitutes up to 5 conventional ink or paint markers * Patented high-tech twist-mechanism for rapid and convenient handling * Useful quiver cap with clip for perfect one handed handling * Extremely long-lasting and environmental friendly due to high quality product technique and refill ability * Lead never dries out - full performance at all times from the first to the very last line * Blue, white, red and yellow: chloride-free for marking on stainless steel