Multi-Purpose. This knife is excellent for removing extended fibers that sometimes appear during processing of TCS Unbreakable. It is also used to define the neck lines of the TCS Unbreakable when necessary. The ergonomically designed handle allows it to be held comfortably in the palm of your hand. Replacement Blades are available (Item #4202-01). It is also a ideal tool for chairside use by Dentist.