Install quickly on my rear springs and one per spring gave me about 1/2-3/4 " of lift. Installed a second one on each spring to give me the 1 1/2" inch of lift I needed. Two sets (4 pieces) cost $65 My rear springs for this car are $300 so these are a good value. If new springs for your car are much cheaper like many are, maybe not.
Tried to work it into the spring on my Ranger and wasn’t able to after an hour even with soap to make it slide in easier. Had to pull the spring to put it in. Gave me a little over 1/2” lift, but leveled the truck. Good product- but hard to install on a Ford Ranger.
Left front spring was sagging on s10 and I cut in half and put in one half and it's close enough to level now so i do not have to buy new springs,just drill 2 holes in it and zip tie it to spring