They seemed like a very good product but I sent them back because I opted for the 2.5 inch, glad I did, the 2.5 sits squarely on the truck the height.
Pros
π Lift Kit Material - Lift brace is aluminum and bolts are 10.9 heat treated and hardened. The anodized finish provides additional corrosion resistance. Extremely strong and light weight compared to steel spacers.