氣彈簧

It took me a few tries to get it initially positioned, but once seated properly, it holds the mill head exactly where I leave it—no drifting at all. The damping on the way down is smooth and controlled, which makes single-handed operation actually workable.

Smooth lift and hold on the X3's head assembly — the damping is dead-on, no sudden drops or jerky motion. My only gripe is the install took a bit of fiddling, but the fit was precise and it's been flawless since.

Installed it on my X3 mill this afternoon and the lift mechanism now glides up and down without any sagging or sudden drops. The damping is just right—smooth and controlled the whole way.