The Hideaway integrated headsets come in 1″ or 1-1/8″

Campagnolo compatible size
Silky Smooth sealed bearing (OD:41.8×45°x45°)
Hideaway top cup & cap have the Insight name & logo laser etched
4mm Allen key type alloy bolt
Slotted bearing race for easier installation
Weight : 80 Grams

Red, Blue, Black, Polished, Gold, White