Promax IG-45 Integrated Headset Color:Red 3/8” heat-treated chromoly axle bolts

3/8” heat-treated chromoly axle bolts with 17mm wrench flats and a 6mm hex slot

Built in machined micro-adjust head for a durable rail grip

Low 17mm stack height

Box One XL Fork with 1-1/8" Steerer Tube

Promax IG-45 Integrated Headset Color:Red 3/8” heat-treated chromoly axle boltsPRODUCT DETAILS SPECS: SIZE: 1" or 1 1 8" STYLE: Integrated 45 45 Campy Spec BEARINGS: Super smooth rolling, precision sealed bearings INCLUDED: Top Cap w Star Nut, Aluminum cover, Top and Bottom Sealed Bearings, Fork Crown Race WEIGHT: 1": 2. 95oz 84g (with top cap and star nut) 1 1 8": 3. 2oz 91g (with top cap and star nut) NOTE: The 1" Promax Integrated Headsets use the same size bearing as the 1 1 8" headsets; the primary difference is that the