The CVD bearing drive shafts improve off-power steering and rotation, but decrease back traction and security. Recommended for used in high-traction conditions, and for songs with many hairpin corners. Set includes complete drive shaft just. Must be used with #304972 - Gear Diff CVD BB Driveshaft Outdrives. Drive shafts are solely made of unique world-renowned, top-secret, self-developed HUDY Spring Steel