The 8210 Series Rock-Flex Disc Harrows raise the bar for performance and features in Class II, all-purpose tandem discs. Offered in sizes 19' through 44', the 8210 discs are a perfect match for MFWD, 4WD and track-type tractors. With Residue Razor® disc blades, aggressive gang angles and increased weight per blade, the 8210 provides superior residue cutting, mixing and soil penetration.