4 Pack, Edger Blades Replace Ryobi 613223, Echo 720-237-001, Stihl 4133-713-4101, Maruyama 216062. Green Machine 237001 Description Fits many brand edgers, blade is 7-11/16", 2" wide, and has 1" center mounting hole. Features: Made in USA, rust resistent, oil finish, unsharpened edges. 7-11/16" Long, 2" Wide, .125" Thick, 1" Center Hole Product Details: Product Dimensions: 2"L x 2"W Brand: Rotary Grit Number: 36 Construction Type: Coated Manufacturer: ‎Rotary Part Number: ‎6477 Item Weight: ‎1.8 pounds Package Dimensions: ‎8.54 x 4.53 x 1.54 inches Item model number: ‎613223 Is Discontinued By Manufacturer: ‎No Color: ‎Original version Material: ‎Iron Item Package Quantity: ‎1 Grit Rating: ‎36 Batteries Included?: ‎No Batteries Required?: ‎No Date First Available: March 29, 2011