So, why didn't somebody think of this before? The Kugel Komponents Shock-Mockups consist of a 3/8-inch steel strut sliding inside a 1/8-inch steel outer sleeve. Both pieces are laser-cut and silver zinc-plated for durability. The holes in the inner strut are 1/2 inch apart. Two holes in the outer sleeve are 3/4 inch apart. That combination allows for adjustments in 1/4-inch increments.