Review on Bettomshin HK2012 Needle Roller Bearings by Johnny Black

These bearings are completely unusable because there is insane axial play. I tried using them on my 20mm diameter bike axle and although the rollers are tight on the axle they have tons of torsional play as shown in my video. Even with two of them there is a crazy game in the bike wheel. I would return it if I could but I think removing the bearings from the wheel will scratch them.