Park makes a single capable of removing all aluminum/Ti cottlerless crank arms, which includes all the branks sold hear except Bullseye and Grove which don't have a 2¡ degree tapered spindle. The Park tool comes in two parts, a puller and a handle. The puller is threaded on both ends, one side has 22mm x 1mm, the other has 23 x 1mm threads so the tool will fit the inner threads at the B/B spindle. The puller piece is threaded into the crank arm and cinched just past hand tight, the handle piece turns through the hollow core of the puller piece with clockwise rotation.
