Material:full carbon Fiber + Alloy cover

Bolt: two bolts style

Diameter: Φ27.2/Φ30.8/Φ31.6mm

Length: 350/400mm

Offset: approx 25mm

Color: black

Weight: approx 210g (31.6*400MM,different sizes with different weight )

Bike Type: Mountain/Road Bike

Passed EN14766 , EN14781 Standards and the JAPAN JIS Standards.