These are replacement bell support posts that I've seen used on Williams 7 pinball machines and some Bally of the same era.
They were designed to fit the slightly smaller holes of the CPR plastic reruns and the very tops are a bit shorter so they also can be stacked on top of each other through the plastic.
Machined out of stainless steel to fit the natural look of the ramps, selling the extras at rounded cost
From $ 7.00
Price depends on selected item variation.
Ships for $ 6.00 (International $ 12.00)