Tite-Reach® extension wrenches have been designed to last, they have been tested by heavy equipment mechanics & farmers over the past half decade.
It is not recommended to use an impact tool on this device, the rough hammering/vibration of an impact can damage the housing & internal components of this tool & cause pre-mature failure.
This tool utilizes #40 series roller chain & roller bearings inside.
This tool comes with a 3/8" adapter so you can easily switch between 1/2" DR & 3/8 DR sockets.
Included items: 1/2" pro extension wrench with built in 1/2" adaptor, 3/8" to 3/8" adaptor.