Product Description Use: Designed for 1 1/8" upper and 1.5" lower head tubes combined with tapered forks. Specifications:Top Cup:1 1/8" dimensionBottom Cup:1.5" dimensionSteerer Tube:tapered 1 1/8" , 1.5"Design:Zero Stack (ZS), External Cup (EC)Technical Information:Material:Aluminium 7075Bearings:cartridgeBearing Seat:45° x 36° (top)Features:angle adjustable headset made of 7075 aluminiumindependent of the head tube lengthself-adjusting mechanism for precise pretensioningsetting options: +/- 0.5°, +/- 1°, +/- 1.5°turning the offset cup by 180° creates a flatter or steeper head tube angleoffset headset cup must be pressed in in alignment with the frame axisit is necessary to change the offset headset cup in order to change the angleStandardized Headset Identification System (S.H.I.S.):In order to clarify and bring uniformity to a sea of headset standards, manufacturers Acros, Cane Creek, Hope, Race Face, Reset Racing and Ritchey have agreed upon using a shared nomenclature, which will likely include more participating companies in the future. This system takes into account a combination of frame and fork dimensions. Both the top and bottom parts of the headset are marked by two alphanumeric identifiers. The first identifier indicates the type of headset (External Cup, Zero Stack, Integrated) and head tube diameter. The second identifier - separated from the first by a backslash - indicates the diameter of the steerer tube. When referring to a complete headset, the specifications of both top and bottom parts must be combined. EC:Bearings contained within headset cups that are located outside of the frame (External Cup)ZS:Bearings contained within pressed-in headset cups where the cup and bearings rest inside the frame (Zero Stack)IS:Bearings that fit directly into a bonded or machined interface that is integrated into the frame (Integrated)Models:ZS44/28.6 - EC56/40 Design: zero stack (ZS), external cup (EC)Steerer Tube: 28.6 mmSteerer Tube Crown Race: 40 mmTop Head Tube (Frame Inner Diameter): 44 mmLower Head Tube (Frame Inner Diameter): 56 mmBearing Angle: 45°Top Stack Height: 13 mmBottom Stack Height: 14 mmAdjustment Angle: +/- 0.5°, +/- 1°, +/- 1.5°Manufacturer Number: BAA0504K Contents:1 x Cane Creek 0° headset cup1 x Cane Creek 0.5° headset cup1 x Cane Creek 1.0° headset cup1 x Cane Creek 1.5° headset cup2 x Cane Creek cartridge bearings2 x Cane Creek gimbals1 x Cane Creek compression ring1 x Cane Creek 1.5" crown race (40 mm)1 x Cane Creek top cap1 x Cane Creek Ahead top cap1 x Cane Creek 1 1/8" star nut1 x Cane Creek hex bolt Manufacturer: Cane Creek Cycling Components 355 Cane Creek Rd Fletcher NC 28732 USA info@canecreek.com Distributor: Cosmic Sports GmbH Leyher Straße 47 90763 Fürth Germany info@cosmicsports.de