This is the one I use, bought from Webike Japan. Very well engineered bit of gear.
https://japan.webike.net/products/36012.html
I wouldn't recommend the one in your post just judging from the photo. Why? Have a very close look at the 'bulb' section at the top of your outer fork tubes where the brace will attach (just below the dust deals). If they are anything like mine, they are not a nice straight machined surface. There is a very gradual roll in the sides. As such I don't think they are going to be a good mate to the design of the ones on ebay.
If you look at the ones I have you'll see the attaching brackets are very thin, AND they are not metal to metal contact. Rather there are some white polypropylene?? inserts where they make contact between the clamps and fork tops. To me this is a much better design to handle that slight roll in the outer fork tube top.
Why all this is important, is that a fork brace that introduces any twist or pinching will create a crap load of static friction (stiction) and create a very harsh ride. You have to make sure everything is dead straight, and adjusted perfectly. Measure the stiction before fitting the brace, and again after fitting to check it hasn't increased. Easy to measure, but I'll leave the explanation till your ready if your decide to get one.
P.S NEVER for a second think of getting any of those 'fixed' type fork braces that you see being sold. By that I mean where the center connecting piece (like the one in your photo) is fixed. They must be adjustable to match the inaccuracy that will always be present.
but it got the job done 
. Obviously I cleaned them thoroughly, no iron particles left I mean.
I also replaced the front wheel bearings and seals.
