Ouch, Shackle trouble

[Tiv]

Had new shackles from POL, after only 500 miles or so ones gone, as in I heard a chink driving down the road, assumed id kicked something up off the road, noted its hanging darned low when I parked up in the garage and had a nosey under as you do....



Anyone else had trouble with cheap shackles (not saying these were just tabling a possible outcome)

Whose [reliable] shackles have you used ?

I never paid much attention to the bolt holding these together, so I will have a looksee the other side now i've thought about it...