Joined: May 2010
Posts: 591
Likes: 1
From: Bucharest, Romania, Europe
Bikes: 1989 Krapf (with Dura-ace) road bike, 1973 Sputnik (made by XB3) road bike , 1961 Peugeot fixed gear, 2010 Trek 4400
For removing it, a large crescent wrench is all you need.
For installing and adjusting a proper headset wrench is needed (alternatives to that are some locking pliers on the top race body, but that likes to marr the finnish, and may distort out of round if clamped too hard, better avoid this)