4130 Steel weld tab.
25.00mm x 16.00mm
1/8" diameter hole
I know this isnt YELP but if you ever think you might need these and they have them in stock - get them. One of the worst right hand doesnt know what the left hand is doing back order nightmare Ive ever experienced - at least 20 phone calls to customer service with no action until finally I got lucky enough to find the right person. This was the third time in a row dealing with the too-big for good customer service ACS. It seems they hired lots of people who dont really care. The parts are nicely made by a shop in Canada.
25 mm is approx 1 inch. 16 mm is approx 0.63 inches.