Brief Description: Flap - Enlarge for rod end bearing.
The hole I'm pointing at in image 1 has to be enlarged to 1/4" I used 2 different step drills for this. The first one has more steps but the steps are shorter then the thinkness being drilled. I figured that this mico stepped bit would cut a better hole by gradually opening up the hole. Once I hit the 1/4" step I switched to the second bit that has steps that are long enough to go through the hole. For me, this worked great. Smooth perfect hole that did not shift.
