Take the new bearings, apply a little grease and place on the crown race of the fork. The forks should now slide out, If it doesn't a gentle tap will normally free it. Take the bike out of the stand and give it a bounce on the ground to ensure everything is seated into place.
This product would be ideal for individuals looking to upgrade the bearings of their 2025 Cube Stereo One headset to ensure optimal performance, longevity, and reliability.