The Envy CNC V2 fork is a pro scooter fork that suits any rider, whether park or street. One of the first forks to accommodate 120mm wheels, the Envy CNC forks are versatile fork that will work on any pro scooter. The CNC forks have built in IHC compression so make sure that your bars and clamp are compatible with IHC forks. Envy PRO SCOOTER FORKS are an aluminum pro scooter fork that work with the following types of compression: IHC. CNC forks are IHC forks so the compression is built directly into the forks. A compression bolt on top of the forks compresses a shim onto the headset, eliminating the need to purchase external compression. Since you do not have to purchase compression AND forks when you buy IHC forks, IHC compression is an affordable and very popular compression system. Envy CNC forks are durable forks and can be ridden on the street or at the park. The Envy pro scooter forks are compatible with the following wheel diameters: 100mm,110mm,115mm,120mm,125mm. Envy pro scooter forks are compatible with wheels with a 24mm core and either a 24mm or 26mm wide PU.