The product is a 5-pack of 8 x 2" red edge blades with a 1" hole thickness, compatible with brands such as Ryobi, Echo, and Stihl. Manufactured by GHAMCHU, these black blades come with a 1-year manufacturer warranty. The blades are designed with a height of 2 inches, diameter of 2 inches, and length of 1 inch. California Proposition 65 warnings state that the product may contain chemicals known to cause cancer and birth defects.
eBay