Cycle Group PX-HS13P2118-RD Promax PI-2 Steel Cartridge Bearing Press in Headset, 1-1/8-Inch, Red Available in Black with anodized Red, Blue, Gold and Black aluminum parts, in 1" and 1 1/8" sizes The pi-2 headset features hybrid aluminum and steel construction The top cap, upper bearing cover and lower race are conk-machined from aluminum alloy while the cups are made from steel This construction results in a high-quality headset at a lower cost. Each headset is Fitted with smooth rolling, sealed, cartridge bearings