The Static Control MPTCOL-100B-KOS is a high-density black toner powder designed for refilling color laser printer cartridges. This universal refill is specifically compatible with HP Color LaserJet and HP Color LaserJet Pro series printers, providing a reliable way to restore printing capabilities. Each factory-sealed container holds 100g of precision-milled particles, which ensures a consistent flow and professional print quality. Because it is a fine powder, you should handle it carefully to avoid creating combustible dust concentrations in the air during the refill process.