1 Samuel 17:7
And the staff of his spear was like a weaver's beam; and his spear's head weighed six hundred shekels of iron: and one bearing a shield went before him.
Torrey's Topical Textbook—AKJV

2 Samuel 21:16
And Ishbibenob, which was of the sons of the giant, the weight of whose spear weighed three hundred shekels of brass in weight, he being girded with a new sword, thought to have slain David.
Torrey's Topical Textbook—AKJV