This 100-Pack of 0.025 in. thick 2-notch utility knife blades is made of heavy duty high carbon steel. The blade fits most utility knives. The sharp points of the blade can be used for cutting drywall, fiberglass, vinyl, paper, plastic, and carboard. Fits ToolPro utility knives and most other brands. Designed to maximize cutting performance and durability in drywall and sheet material. 100 .025 in. thickness, 2 Notch Blades. Two point blade for double life. Premium high carbon steel. Manufactured to exacting European specifications. Blades are sorted into 10 pack holders. ToolPro Utility Knife Blades 100 Pack