Super-smooth steering, quality materials, cutting-edge design and serious durability are all hallmarks of Cane Creek headsets. The 40 Series has light, tough, and beautiful machined 6061 T6-aluminum cups that are internally relieved for even more gram shaving. You also get Cane Creek's corrosion-resistant black-oxide sealed bearings and quality seals throughout to keep the grease in and the dirt out, including Cane Creek's Clip Seal that completely seals the top assembly.
Also available in 1-inch (image unavailable from manufacturer).
Stack height: 28mm (1-inch and 1 1/8-inch); 16mm (1.5-inch)
Weight: 88 grams (1 1/8-inch)