Engineer's Hammer Item No. Head Weight Pack KGS 968-831 100 Grams 6 0.8 968-832 200 Grams 6 1.4 968-833 300 Grams 6 2.1 968-834 400 Grams 6 3.3 968-835 500 Grams 6 3.8 968-836 600 Grams 6 4.8 968-838 800 Grams 6 5.2