This is a large 31 blade (measured diagonally) that is close to. 3 inches thick and has a 1.375 center hole. Very heavy blade, over 6.5 pounds. I have several of these and they are beautiful blades that have never been used. I just don't know what machine uses them.
The only marking on them is REX004 If you need this blade, here it is. Please let me know what it applies to. The item "Large 31 inch mower blade 1 3/8 center hole. 290 thick Finish Mower" is in sale since Wednesday, July 26, 2017.
This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Lawnmowers\Parts & Accessories". The seller is "polya2885" and is located in Gardiner, New York. This item can be shipped to United States.