Crank Arm Fixing Bolt.Fine workmanship and perfect style.X5 and XX1 specifications are suitable for all M15/26MM GXP crankset covers are 26MM, such as: X5/X7/X9/X0/XX1/FORCE/RIVAL, etc.Applicable: For-Sram X5/X7/XX1/FORCE/GX and other cranksetsM15/22 specification is suitable for GX G1000 series crank, the outer cover is 22MM.For SRAM GXP Spec Crank ScrewsWeight: 10gNote: The specifications and dimensions of X5 and XX1 are actually the same. The difference is that the appearance of the outer cover is different. X5 uses a 16MM hexagon wrench, XX1 uses a 10MM hexagon wrench, and the threads and sizes of the internal and external screws are exactly the same.Type: M15/M22Colour: blackMaterial: aluminum alloyPackage Contents:1 * ScrewOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.