14506851 CV Driveline for Universal ProductsOne New Aftermarket Replacement CV PTO Driveline Weasler Metric Series 2580 Fits Servis Rhino Flex Wing Mowers This aftermarket replacement constant velocity (CV) PTO driveline connects a tractor PTO to flex wing rotary cutters and mowers, delivering smooth, consistent power transfer across a wide range of operating angles. The CV wide angle joint assembly self cancels torque and speed fluctuations common in single Cardan type universal joints,