Material:Aluminum 6061-T6 or 7075-T6
Description:Traditional #219 Aluminum One Piece Sprocket;#219 Aluminum One Piece Sprocket , Hard Anodized;Quick Release #219 Aluminum One Piece Sprocket
Size:63T‐97T
Hard Anodized:30um‐40um
Surface Finish: Color Anodized
Color:Black/Blue/Gold/Red/ Silver
Hardness: Above HB145