3/8 Square Drive Interchangeable Head

Note: Must be used with s 12-03404 or 12-03405 and 12-03406. See Accessories.

This series is designated SD. Ideal for use when a socket is to be used and there is significant rotation of the fastener required to complete the tightening:

• Calibrating the wrench on a torque tester.
• A socket can be used to engage the fastener.
• A small amount of rotation will be needed to attain the desired torque.