MULTIPLE SIZES AVAILABLE - Goucrro 13G bicycle spokes are available in lengths from 70-300mm, please choose the size that fits your bike. Spoke diameter: 2.3 mm; nut length 12 mm HIGH QUALITY MATERIALS - Bicycle spokes are made of high quality #45 steel, which is strong and can withstand all kinds of complicated road conditions to ensure long-term use UNIVERSAL - 38pcs black& silver steel spokes + nuts, easy to install, these professional spokes are universal for all bikes, such as MTB,Ebike,road bike, bicycle, tricycle wheel. etc. Replacement/repairable wheel spokes NOTE- Bike Spoke length depends on your rim, hub and the weaving style. Therefore we have no recommendation on this, you can measure your old spokes first, please confirm before placing an order PROFESSIONAL CRAFTSMANSHIP - Professional precision machining and adjustments ensure that each spoke has good toughness and impact resistance, improving the balance and stability of the wheel ASIN B0F18B3BWM Size 287mm Color Black-13G-287mm Brand Name goucrro Manufacturer goucrro Item Diameter 2.3 Millimeters Material Type Carbon Steel Exterior Finish Black and Silver Automotive Fit Type Universal Fit Manufacturer Part Number BSS-13G-FU Compatible with Vehicle Type Bicycle