1. Compatible with: This crank screw are specifically designed to fit for SRAM's NX-GX-XX1-EAGLE gearsets. 2. High-Quality: The crank screw are made of high-quality Material, ensuring excellent strength and durability. 3. Anodized Surface Treatment: The anodized surface treatment creates a tough oxide film that enhances the cap's wear resistance and corrosion resistance while giving it a sleek appearance. 4. High Hardness: With the ability to withstand external impact and pressure, ensures stability and durability during extended use. 5. Precision CNC Machining: The crankset screw are manufactured using precision CNC machining technology, guaranteeing accuracy and consistency. Product specification:Screw M18 Product size:Screw: 25mm (0.98in) x 25mm (0.98in) x 20mm (0.79in) Net weight of product:Screw: 5.1g Type:Crank Bolt Colour:Black Material:Aluminum Alloy Package Contents: 1 * Bicycle Crank Bolt Only the above package content, other products are not included. Note: Light reflection 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.