Milwaukee 49-66-6730 SHOCKWAVE Impact Duty 3/4” Drive Universal Joint The Milwaukee 49-66-6730 SHOCKWAVE Impact Duty 3/4” Drive Universal Joint features a 15-degree swivel for access in hard to reach places and impact durability in high torque applications. The laser-etched size markings allow you to easily identify drive sizes. The dual-hole design and ring groove allow for easy Universal Joint attachment and removal. All Milwaukee® SHOCKWAVE Impact Duty™ Socket Universal Joints meet ASME industry standards.