Technical Data:
1/2 in drive impact extension
Size stamped on tool
Side locking hole
Standard: ASME B107.110-2012

Application:
Use extensions to reach difficult fasteners
Male square oriented in line with female square for fixed-head torque wrenches
Full chamfer at drive opening where applicable
Drive-end chamfer and four detents for positive engagement

Dimensions:
Overall length: 3 in
Weight: 0.3 lb