One-piece forging of 7075 aluminum alloy. Axis Chrome-molybdenum steel, High strength, High temperature resistance, Preservative, Light weight. Laser laser surface treatment, does not fade. 3D forging process, one-piece molding. Box packaging, the best choice for gifts.Brand: GOLDIX Model: GXP Mountain Bike Crankset Crank Length: 170mm Installation Type: GXP Surface Treatment: Anodic Oxidation Chainring Specifications: 32T/34T/36T/38T (Chainring Diameter) Pedal Thread Specification: M14 Support Speed: 7S-12S Shaft Diameter: 24mm Shaft Material: 7075 aluminum alloy Shaft Length: 118mm Crank Screw Specification: M15 Compatible: SHIMANO, SRAM, mensah, LTWOO, microshift Crank Material: 7075 Aluminum Alloy Bottom Bracket Type: BB68 M68-73 (standard configuration) Bottom Bracket specifications: Applicable Frame Bottom Bracket Width 68mm-73mm Thread Specification: BC1.3724T, Thread outer diameter 34mm, suitable for 24mm-24mm, 22MM (with adapter) -24MM Crank Shaft. Note: 170mm Crankset include: Crank+BB+Chainring. 170mm ROAD Crank: about 478g Chainring: about 170g Bottom Bracket: about 105g Note: Manual measurement, there is an error of +-5g.