The Mighty Marker IM-81 Super Jumbo Marker is designed for professionals in marine and industrial settings, offering maximized ink capacity and performance. With 30ml of industrial-grade ink, each IM-81 equals the output of 120 standard capillary markers, minimizing waste and maximizing efficiency. This super jumbo marker features a valve action design to prevent drying and ensure consistent ink flow, while the reversible and replaceable broad chisel tip provides versatility for bold or precise markings. Engineered for tough environments, the IM-81 delivers waterproof, fade-resistant, and abrasion-resistant marks that stand up to sun, rain, and harsh conditions, making it ideal for marking shrink wrap, pallets, and other non-porous surfaces. Proudly Made in the USA, this marker is built to meet the high standards of professionals who demand reliability and durability. Whether you're working on marine projects, industrial tasks, or general use, the IM-81 offers performance you can trust.