If for one car you need two items, you need to order two pieces, this does not concern a set.
In the second gen V70/XC70 and first gen XC90/S80 adjusting the handbrake only can be done at the brake cable
The adjustment can`t be adequate if:
- the brake cables are extended over the years
- the brake shoes are abraded differently
- the brake drum in the disc has made many miles
The sum of these abrasions won`t let you adjust the handbrake correctly.
In the past you only could replace the brake disc and shoes.
With this adjuster upgrade you can take away that problem.
Installing the adjuster is easy to do, but you need a special tool for the brake shoe locking springs, you can find this tool below at the recommended products.
You can also find a installation guide for the adjuster below here in pdf:
24 pcs available 
