RH tungsten carbide scraper for John Deere Air Seeders with F90 Series openers, including 1590, 1890, 1895 and 1990. Features a bracket that bolts on the seed boot pivot bolt, stainless steel scraper blade and 3.5" tungsten carbide EDGE. Sold as individual scraper, which includes mounting bracket, scraper blade and assembly hardware for seed boot side of opener on right side of drill. NOTE: If seed boot pivot bolt is 4.25" in length, AD22063 spacer is required (sold separately). 3.75" seed boot pivot bolt does not require spacer.