The first picture is a product picture, the other pictures are sample displays Features: 1. Well-made: This anodized CNC machined bicycle riding wheel with sealed bearings is used for the center bolt derailleur. 2. Durable accessories: The stainless steel bearing of the bicycle rear derailleur slideway wheel has super durability. 3.The bicycle rear derailleur slideway wheel is well-made, has super durability, and has a wide range of compatibility. 4.Durable material: This product is made of high-quality materials, durable, long service life, firm and stable in use. Description: The bicycle rear derailleur slideway wheel is well-made, has super durability, and has a wide range of compatibility. Specifications: Material: Aluminium Alloy Size/Color : As shown in the figure Package included: 1 set * Bicycle rear derailleur Notes: 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm