The Neapco 1310 Series 2" 4-Bolt Driveshaft Companion Flange is designed to provide a perfect fit and easy installation. It has been rigorously tested to withstand challenging operating conditions. The companion flange is manufactured with high-quality materials for durability and longevity. The flange features a seal surface designed to accommodate a seal to prevent fluid leaks. This flange is ideal for various applications, including automotive, agricultural and industrial. FleetPride is your First Click in Heavy Duty®.