Boaz and Jachin, two copper pillars, stood in the porch of Solomon's Temple, the first Temple in Jerusalem (1 Kings 7:15, 1 Kings 7:21; 2 Kings 11:14; 23:3).
Other versions of the Bible say Brass or Bronze rather than Copper. The Period is the Bronze age.
Boaz ("fleetness, strength") stood on the left and Jachin ("founding"), also spelled Jakin (יָכִין, Standard Hebrew...