Magnet, 4x2 mm

The tiny size is exactly what I needed to hold the handwheel securely, and it snaps into place with a satisfying click. Took seconds to install and now the handle doesn't flop around anymore.

Ordered this because the OEM knob kept sliding off when I retracted the quill. The 4x2 mm size fits the recessed pocket perfectly, and the pull force is strong enough that I haven't had a single slip since installing it—exactly what the mill needed.

It's tiny, but that's exactly what I needed—the 4x2 mm size fits perfectly into the hand wheel slot to keep it from flopping around. A clean, simple fix for a minor annoyance.