Technical Data:
3/4 in drive impact extension
Male square oriented in line with female square for fixed-head torque wrenches
Drive-end chamfer and four detents
Standard: ASME B107.110-2012

Application:
Use extensions to gain access to difficult-to-reach fasteners
Features through hole(s) and groove to accept a retaining ring or pin and O-ring to help secure the socket/attachment to the drive tool anvil

Dimensions:
Overall length: 5 in
Weight: 1.48 lb

Remark:
This size is marked as not covered under ASME standards