Features1Selected aluminum alloy material, antirust surface treatment, durable and long service life. 2Spring effective rebound, shock absorption preferred, easy to install and operate, convenient and practical. 3Expansion body selected CNC knurling machine machining, bite force tight, stable after installation of high pressure spring expansion and contraction freely. 4Applicable for 1 (25.4mm/1.0in) and 1.125 (28.6mm/1.1in) outer diameter carbon fiber forks and mountain suspension forks. 5Suitable for carbon fiber core front fork, with this hanging core, you can avoid damage to the inner wall.SpecificationItem Type: Expansion Hanging CoreMaterial: Aluminum AlloyWeight: Approx.35g/1.2ozExpansion Range: Approx. 22.2-25.4mm/0.87-1inApplication: 1 (25.4mm/1.0in) and 1.125 (28.6mm/1.1in) Outer Diameter Carbon Fiber Forks and Mountain Suspension ForksPackage List1 x Expansion Hanging Core