• Hook knife tool designed for cutting sheets of acrylic plexiglass and other hard and brittle plastics. • Allows you to make a precise groove in the acrylic sheet, making it easier to break along the line. • For use, mark the board with a pen, place the ruler, and use the hook knife to trace and deepen the groove. • The back of the knife features a protrusion that helps align the tool with the groove and split the acrylic sheet in a controlled manner. • It is important to protect the knife tip and replace the blade when it becomes dull. • The set includes a hook knife with a curved handle, 3 installed blades, and a box with additional blades, totaling 13 blades.