These are great, but as I noted on the 4″ sliding stops the hole on the end was distorted and I had to ream out. I then had to square up the front side so that it is square. These are great with the 1/2″ ball pin locks to help set up, be able to move and adjust as a stop and then lock down easily by hand. I had to ream out and square up all 12 of my sliding stops, not 8 as I previously stated. I am slowly filing down the bulge that is created at the crease/bend by the brake. I am doing this so that I have a true flat square plane. Thats just me fine tuning my equipment to my needs. But I think for the cost and overall order I should not have to ream out all 12 of the 16mm holes.