Turn sockets from above when there's not room to swing a standard wrench handle. The wrench slips to disengage and stop turning the fastener, preventing overtightening. Factory-set wrenches ensure the same torque is reached every time. The torque setting cannot be adjusted. Wrenches come with a calibration certificate traceable to NIST that states the product has passed a test for accuracy.

For technical drawings and 3-D models, click on a part number.