Kyosho No.VZW442 Evo.2 3D Racing Clutch Assy is a high-performance clutch system designed for use with high-power engines, such as the O.S. SPEED T1202. It features a lightweight flywheel and clutch weight, which help to reduce rotating mass and improve engine response. The clutch also has an adjustable gap, which allows you to fine-tune the engagement point to suit your driving style. Additionally, the clutch is equipped with a ball bearing and a shield bearing, which help to reduce friction and wear. Overall, the Kyosho No.VZW442 Evo.