The mini utility knife blades are designed for use with standard mini utility knives. these blades are constructed from sk5 material, providing a hardness rating of 56-64hrc. each blade measures 2.17" in length, 3.74" in height, and 0.16" in width, with a thickness of .017". this pack includes 5 blades, suitable for cutting light sheet materials, paper, and cardboard. these refill blades are compatible with most standard mini utility knives. the sk5 material composition is chosen for its specific hardness properties, which are maintained at a 56-64hrc level to support various manual cutting tasks. these blades are intended for use in shop environments, craft projects, and general utility work where precision cutting of thin materials is required. the .017" thickness ensures the blades fit securely into the blade housing of standard mini utility knives, allowing for consistent operation. the 5-pack configuration provides a supply of replacement blades for ongoing projects. these blades are suitable for cutting tasks involving paper, cardboard, and light sheet materials, making them a practical addition to a tool collection. the design focuses on compatibility with existing mini utility knife handles, ensuring that users can replace dull blades with minimal effort. the blades are intended for manual operation and are suitable for a range of light-duty cutting applications in home or workshop settings.