A&I 21" Mulching Blade - B1JD1045 10W30 6X4 Fits the following Platform

6X4 Fits the following Platform Cutting Combine Models: 600

1 This Carburetor fits the following General Purpose Engines: GX390K2

Z915E ZTrak E Series Mower

670 and 770 Compact Utility Tractor

A&I 21" Mulching Blade - B1JD1045 10W30 6X4 Fits the following PlatformA&I 21" Mulching Blade B1JD1045 A&I B1JD1045 Blade, Mulching. Replacement XHT Lawnmower blade. XHT(Xtreme Hardness & Toughness) blades are 25 40% harder than standard lawnmower blades. Benefits of the HXT blade are sharper and longer lasting cutting edges. More resistance to bending. Tighter tolerances in the aftermarket vs. OEM. XHT blades also offer greater impact toughness. (1) blade for 21" cut. C to C : 2" Center Hole: 3 8" Length: 21" Outer