The MARKAL DURA-INK Jumbo Chisel Permanent Black Marker 2 pack is a high-quality and durable marker designed for business and industrial use. With a 9.55mm-16mn tip size, these permanent markers are perfect for making bold and long-lasting impressions on various surfaces. Made by the trusted brand Markal in India, these markers are ideal for professionals who need a reliable and efficient writing instrument. Additionally, the California Prop 65 Warning ensures users are aware of any potential health risks associated with the product.