BUCKLOS Bike Headset Top Cap and Expander Plug, Fits 1-1/8" Fork Stems, Aluminum Alloy Top Cap with Screw

I have no complaints about the cap or the steel bolt. I was primarily after those two pieces. They look good and work fine.I do have a problem with the expander though, as it's based on a very poor design--you'll find identical (and nearly identical) variants available on cheap websites coming straight from China. If you see an expander that looks like this (all silver with dimpled contact area instead of smooth), stay away. This design MAY work fine with carbon and aluminum steerers, but at least with steel steerers, they lack the surface area necessary to grip the sides properly. This is where the dimpled pattern fails miserably, as it doesn't contact enough (surface area) to hold the expander in place when tightening down the stem cap. The expander plug instead gets pulled up into the cap instead of pulling the fork snug. The idea is supposedly that the dimples will grab into the walls of the steerer... but since the plates are made of aluminum, they won't do anything to steel.I've tried to REALLY torque down the expander, but it always pulls up with limited effort (when tightening stem cap). I've tried using carbon fiber paste, but that barely helps. Combine use of CF paste with pushing up on the fork while tightening the cap for best results... it won't be great (minor play in the fork/bearings), but it's better than nothing. For comparison, I tried using my FSA and Reynolds expanders (both of which have SMOOTH contact plates and seat deeper into the stem), and they worked perfectly and didn't need to be torqued into the steerer as much for superior effect.Again, if you have a steel steerer... avoid this expander design like the plague. It is at least somewhat functional with proper technique, but if you're like me, you'll end up wasting a good hour trying to figure out why it isn't working properly... Really nice cap and bolt though!