The only time I used that was when we did pony rides for the school and it fitted to the head peice and down to the 2 ds on the english rideing saddle.
I would not use one driveing at all as I have no reason to my horse and pony don't try to go for the grass at all when thay work thay know when to work as play is in the paddock so to speak.
Going back to harness all mine is double stiched and is hand made in english leather so id give you an example my patent pair was £3500 with full collars.
And my tandem wheeler bridle was £250 it has an auxillary throat lash and a gullet strap which connects to the nose band.
I brought a set of harness which I called my reading set it came from the reading horse sales.
I was late I missed verious lots and I was biding for something that I could not see.
well I got it for £200 and owch o boy what did I buy well a load of rubbish.
As I only had a leather donkey harness for tricky well when I got judged I got pulled to pieces it was a breast collar set.
Were I enterd him was the london harness horse parade.
I got a flyer from a harness maker and I came up with the idear of referbishing the old harness I brought.
So I did it a bit at a time and I used 90% of the buckles the crupper the blinkers(blinders)the poll strap and the throat lash and the out side of the pad.
Its my working set and I have had it for about 20 years now and its as good as when it was reborn so to speak.
Quincy has got a full harness that came with him but I had a set of traces made for him so I can use quick releases thay have steel rings on the end and thay are doubble stiched and cost me £120.
I have brought off ebay
for a laugh a pink full size driveing harness the blinkers have pink harts that cost me £65.
As I said for a laugh I personaly would not buy a leather one from e bay unless I looked at it first hand or knew the vender or the harness maker.
My first saddle is 35 years old and is as good as new I brought it before I got my first pony and its in storage in my bed room on a saddle rack at home.