The RYOBI Reel Easy+ Serrated Blade Replacements 2in1 Pivoting Head 8 Pack (ACO53N1FB) is a set of high-quality blade replacements designed for RYOBI string trimmers. These 2-inch blades feature a serrated edge for efficient trimming and a pivoting head for easy line replacement. Made of durable plastic and in a vibrant red color, these blades are compatible with 2 and 4 cycle plus 40-volt engines, making them suitable for most RYOBI trimmers. With a pack of 8 blades included, this product is perfect for maintaining your yard and garden with ease and precision.