Universal Cycles lists the Tange Levin with a 27.0 crown race: Universal Cycles -- Tange Levin CDS Threaded Headset 1"

As others have said, it'll last as long as a Chris King, it just doesn't have the bling factor of a King. FWIW, Universal Cycles also sells King headsets: Universal Cycles -- Chris King Gripnut Headset - 1 Inch