These body posts are made out of Delrin for higher strength than your average body post, but lighter than aluminum. The bottom is machined perfectly flat at 90 degrees and a hole is drilled exactly in the center. Having a screw hole in the same exact spot each time makes it easy to replace/swap out different posts without affecting the body hole alignment.

This kit includes:
2 x front body posts. (1.75" x 5/16" diameter)
1 x mid body posts. (2.5" x 1/4" diameter)
2 x rear body posts. (3.15" x 5/16" diameter)