The X-ACTO #5 heavy-duty plastic knife is a durable, hardworking knife that can stand up to some of the toughest tasks. The heavy-duty knife handle is compatible with X-ACTO #2, 15, 18, 19, 22, 23, 24, 25, 26 and 28 blades as well as the router assortment and saw blades. The #5 heavy-duty plastic knife handle comes packaged with the X-ACTO #19 angled wood chisel blade. X-ACTO knives are the preferred cutting tool for a wide variety of professionals and hobbyists alike. Designers and artists love the X-ACTO knife's ability to produce careful and meticulous cuts with consistency, while engineers praise the knife's durable design and reliability. - The original X-ACTO knife has been praised for more than 50 years as the standard for precision. Attaining this level of precision, accuracy and reliability starts with supreme quality craftsmanship. All X-ACTO knives are built with a carbon steel blade for a reliable cut every time. Additionally, they are crafted with a sleek design that fits comfortably in the hand, allowing you to continue making the precision cuts needed to finish the job, no matter how long it takes.