As advertised make sure to send them home when you install them! I used a 2X2 piece of ash wood with a hammer. The first one I installed wasn't deep enough and I had to pull the axle out again. Then I drove it in until I was out. As you can see in the photo, the gap from the yolk on the axis is not large. Yes, I upgraded to 1350 yolks, which is more than stock. Much luck!