Cane Creek 10 1 1/8" ZS Tall 44mm Threadlesss Black Value-Oriented Replacement Headset Series 6061-T6 Aluminum Bottom Cup and Covers, Polymer Top Cup Lightweight Polymer Compression Ring Interlok Spacer Compatible Lightweight Polymer Crown Race Consistent Stack Heights Across 10, 40 and 110 Series Internal Parts Are Cross-Compatible Across 10, 40 and 110 series