The Wise Forkast forks are HIC/SCS forks that come with 2 top caps, one for HIC shims and another for SCS compression. If you are using HIC compression, you will need an HIC kit with a removable top cap to use the included HIC top cap. Wise forks are compatible with up to 125mm x 24mm wheels so they can run a wide range of wheels. Forkast forks are made of 7 series aluminum so they are seriously durable AND light!Wise HIC/SCS forks is a pro scooter clamp that Wise created for Jules Couderc, who rides pro scooters for Wise. Forkast forks are an aluminum pro scooter fork that work with the following types of compression: SCS,HIC,TCS. When you purchase Wise HIC/SCS forks, you will need to purchase a compression system (listed previously) that is compatible with your forks, as well as scooter bars that are compatible with the selected compression system. Wise Forkast forks are durable forks and can be ridden on the street or at the park. The Forkast forks are compatible with the following wheel diameters: 100mm,110mm,115mm,120mm,125mm. Forkast forks are compatible with wheels with a 24mm core and either a 24mm or 26mm wide PU.