Start to the left of Rubber Mission. This route is on the right side of the north face of the tower. Difficult crux is down low, from there it's a matter of fighting the pump to make it over the lip, where it lightens from there.
A truly great climb, classic at the grade (12b seems spot on). Relentlessly steep and pumpy through the 8th bolt or so, with a couple of tricky cruxes thrown in. Top eases off to around 10+, but it's exciting all the way to the anchors. Big clean whippers.