Wrapped V-Belt consisted of a rubber core, tension cord, rubber top surface and an enveloping fabric wrap. The tension cords determine the performance and durability of the drive. Optibelt V-belt is designed specially for heavy duty-application ranging from the Red Power 3 which requires no maintenance for the life time. Blue Power which can withstand the shock load, and the normal V-belt which can achieve up to 94 percent drive efficiency.