This tapered headset is a classic, unbeatable Chris King sealed bearing headset. Designed to fit a 1 1/8" to 1.5" tapered steerer tubed fork and frames with 34mm to 44mm internal diameter tapered headtube. Both cups are conventional external fitment.The NoThreadSet features aluminum cups, bearing cap, and stem cap built around our renowned stainless steel sealed bearings. Each NoThreadSet includes a stainless steel baseplate and our custom starnut with bolt.