Have a sharp cutting tool ready at all times thanks to this 100-count Stanley Utility Knife Blades package. The blade is constructed of carbon alloy steel to give you better performance than a standard heavy-duty blade. The 11-921A Stanley utility blade is engineered for all-purpose cutting and will fit most standard utility knives. Each one features a precision-honed edge for a consistent and extended cutting life. When one blade dulls or reaches the end of its usefulness, simply replace it with another.