From the Manufacturer
The long-lasting choice for cutting holes in materials too hard or abrasive for standard bi-metal saws, or so thin they would strip bi-metal or chip carbide teeth. Ideal for cutting ceramics, fiberglass, hardwoods, cast iron, composites, etc. Maintenance kit includes popular sizes for plumbing, electrical, and industrial maintenance jobs. Saws (1 each): 3/4″, 7/8″, 1-1/8″, 1-3/8″, 1-1/2″, 1-3/4″, 2″, 2-1/4″, 2-1/2″. Arbors (1 each): M24CT, M44CT, M45CT Extension (1): 12″