Features: 126 Links, 1/2x11/128Inch, Suitable for most 12 Speed Bike Chain. Make from Alloys steel, antirust, anticorrosion, wear-resistant and Enduring. Appearance lubrication treatments, smooth gear shifting, low frictions and none noise. With buckles, easy to disassemble, easy to clean and reusable. Suitable for mountain bikes, road bikes, fold bikes. Specifications: Materials: Alloys steel Type: 12 speed Style: Silver none hollow/gold none hollow/color none hollow/silver half hollow/gold half hollow/color half hollow/silver full hollow/gold full hollow/color full hollow Size: as shown in the picture Package Includes: 1pc 12 Speed Bicycles Chain note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.