The John Deere RE300212 is a genuine OEM disc designed for heavy-duty applications across a wide range of John Deere agricultural and construction equipment. This durable disc features an 18-inch (457.2 mm) outside diameter, 0.250-inch (6.35 mm) thickness, and an 8-hole bolt pattern with a 9-inch (228.6 mm) bolt circle diameter. The center hole measures 4.5 inches (114.3 mm) in diameter, and each bolt hole is 0.688 inches (17.4752 mm). Weighing approximately 15 lbs (6.8 kg), it ensures reliable performance and precise fitment in compatible John Deere tractors, combines, sprayers, loaders, and more.