This set of three Oregon 91-534 mower blades is perfect for your Grasshopper lawn mower. Made of durable alloy steel, these blades are compatible with gas power sources and measure 21" in length and 2.5" in width. The set is designed for a 61" cut, and the blades are specifically made for lawn mowers, making them an ideal choice for your outdoor landscaping needs. The brand of these blades is Oregon, and they are designed to be compatible with Grasshopper lawn mowers. The blades are made of high-quality alloy steel, ensuring their durability and longevity. The set includes three blades, each measuring 21" in length and 2.5" in width. These blades are perfect for your lawn mowing needs, and they will provide you with a clean and manicured lawn.