I have the Cyclus tool which I bought state side about 10 years ago. It is good quality. I ruined the bearings on my Acros 1-1/8” hidden headset on my Flyte due to a stupid installation error. A bushing that fits in the internal diameter is less important than making sure it is fully supported on the outside of the cup as you press the cup in. I mangled a very sophisticated Acros bearing and had to start all over again. Another nugget of advice: only press in one cup at a time. You are greatly increasing the chance for something to go “cattywhompus” if you roll the dice on pushing both cups in simultaneously.