Mabye these photos will help answer some of the questions about the Harbor Freight Quick Hitches:
This first photo shows the Quick Hitch as it arrived from Harbor Freight.
This photo shows that the inside width is 26-3/4 inches.
But, as others have said on the other threads, it isn't wide enough. The attachement points on my KK 6-foot rear blade, my KK 5-foot box blade, and my PHD are all 28 to 28-1/2 inches wide. My Howse brush mower is 27-1/2 inches wide.
So . . .
I used a bottle jack and 2x3 to spread the hitch to approximately 28-1/2 inches.
Then I found that the hook wouldn't connect to any of my implements. So, I had to order the adapter, as shown in the picture below. The adapter is shown on the left.
The hitch adapter is not in Harbor Freight's catalogs or on their website. But, you can order it by phone. The part number is 93691. It cost about $8.00. I bought several other items also, and the total shipping was about $7.
When I first tried to use the hitch after I widened it, I had to take a 20 oz. ball peen hammer to the guards for the lift pin locks. They stayed straight, when I widened out the rest of hitch. A couple of good whacks did what I needed.
Anyway, I am real pleased with the hitch. It took about 10 minutes to widen it. Widened, and with the hitch adapter, it fits my 6-foot KK rear blade, my 5-foot KK box blade, my Howse brush hog, my post hole digger, and my carry-all. (I had to add bushings to by brush hog lift pins so that they were 28-inches wide. That cost about $2.00.)
It sure makes connecting heavy implements a lot easier. I've done some pretty heavy gravel pushing and pulling with my box blade, and some pretty heavy rear blade ice/snow pushing/pulling since I installed it.
I may have to find a shorter top link, as it doesn't shorten up quite enough to get the range I like to have on my box blade. It is fine with the other implements.
It doesn't fit my 30-inch KK dirt scoop, my single bottom plow, or my drawbar. But, the hitch only takes about a minute to remove from the tractor, and these implements are real easy to attach.
The closest price I've seen to this hitch is the Homier hitch, at about $125 -- without the adapter. I think it is the same hitch. It also appears to be the same hitch that TSC has for about $175 -- but they include the adapter.
Happy Tractorin'
Knute