》》》 1/2'' IMPACT CARDAN JOINT 274100P 《《》. The cardan impact joint is a highly useful and versatile tool.The joint is made of chrome vanadium steel, which guarantees high durability and reliability.It is ideal for professional auto repair shops and DIY enthusiasts.It has a locking ball hole in the center, thus preventing tools from falling out during work.Additionally, the joint has a ball on the pin.