From Belltech website:
Spring Distance Spacers
Belltech’s new application specific “Spring Distance lift spacers” are manufactured by a specialized injection process. Belltech offers an exclusive spacer system engineered with spring contours to dissipate the spring load evenly over the whole spacer surface. All spacers are designed to lift your Ford Truck by 1”. This could be used to lift your factory ride height as well to adjust an existing lowering. The ease of installation makes this a great 1” lifting solution!
A one inch "Spring Distance Spacer" is inserted between the top of the shock mount and spring to lift the ride height one inch.


What I got:



WHAT THE HECK IS THAT?
I'm calling tomorrow!

 

To start it goes under your rubber spring isolator and 2 it doesnt need to be one inch i forget the name of what you call it but 3/4 of spacer = 1 inch of lift and 1 3/8 equals 2inch lift, its fine I dont know what else your expecting? It should work fine, take your shock apart and place that under the rubber spring pad against the top cap and your good to go