The award-winning AngleSet threadless headset makes it possible to change your game. You can transform the head angle of your mountain bike with ease, with up to six offset angle adjustments. Steeper or slacker adjustments from 0.5 to 1.5 degrees, make dialing in the perfect geometry to attack the trail a breeze. The design of AngleSet is head-tube length independent and fits most popular head-tube standards for both tapered and straight forks. FEATURES SPECS FEATURES: Made in the USA of 7075 T-6 aluminum, internally contoured and relieved to minimize weight and maximize strength Low-friction upper bearing seal completely seals cup from contaminants and is fully captured by the top cover Steeper or Slacker +/-0.5, +/-1.0, +/-1.5 degree Dependable black-oxide coated, sealed bearings Interlok spacer compatible SPECS: Bearing Grade: Sealed cartridge Primary Color: Black Angle: 0.5°, 1.0°, 1.5° Crown Race Diameter: 40mm SHIS Upper: ZS44/28.6/H13 Headset Position: Complete Upper Cup: 44mm Headset Type: ZS, External threadless Material: 7075-T6 Aluminum S.H.I.S.: ZS44/28.6/H13 | EC56/40/H15 Steerer Tube: 1-1/8''-1-1/2'' Lower Cup: 56mm SHIS Lower: EC56/40/H15