Our SHOCKWAVE Impact Duty socket extensions provide you with better access in hard to reach places and offers extreme impact durability in high torque applications. Our laser-etched size markings allow for fast identification of drive size and length. The dual-hole design and ring groove allow you to easily attach and remove the extensions. All MILWAUKEE SHOCKWAVE Impact Duty socket extensions are backed by our lifetime assure and meet ASME industry standards.Optimized for use with 3/4 in drive impact wrenches and adaptersDual-hole design and groove for easier attachmentBall detent design for great impact socket retentionMeets ASME industry standardsLaser etched part numberMade with forged impact steel for durability in high-torque applications backed by our lifetime assureLaser etched markings for easy identificationLifetime assure covers impact sockets and extensions onlyFor use with impact sockets