This is a good product, BUT.. like so many new items it doesn't fit straight out of the box. Basically the bolt supplied is approx 3mm to long and will not fit into the spring hanger box. You will need to discard the spring washer and cut the excess length of the bolt off flush with the end of the captive nut......
NOT a complaint, but may save you a lot of aggravation if you do this before you try to fit it....
This replacement part represents a good value fix. The part is well made. The holes / fixings align making assembly easy.
Personally, when replacing a rear spring I would replace all fixings as one. So, rubbers, pads spacers "U" bolts the lot. This supplier can supply everything (most of the time).