Impact adaptors work by enabling the drive end of an impact socket to fit a power wrench with a different drive size. Each adaptor is constructed to manage the torque and vibrations of the power wrench it is attached to. The immediate benefit of using an impact adaptor is not needing to own lots of impact sockets and power wrenches for each drive size. Impact adaptors are one of over 130,000 tools available from Euro Car Parts. You can purchase from us online and with Free Home Delivery, along with Free Click & Collect options nationwide, we make it easy as possible to receive your tool.