The K-71 ink marker boasts a large capacity, pumping out enough ink to complete a variety of projects. They feature a valve-action system, dye-based inks and a chisel tip that offers two edges for line variance. The black and silver inks are opaque, while the other colors are transparent allowing them to be blended to create new colors and hues. Details: Black 22 mL capacity 7 mm chisel tip Alcohol based and xylene free Does not contain harmful solvents Conform to ASTM D-4236