4551-310 10 1 = 10 X 10 10kg
4551-312 12 1 = 10 X 10 8kg
4551-314 14 1 = 10 X 10 6kg
4551-316 16 1 = 10 X 10 5kg
4551-318 18 1 = 10 X 10 4kg
4551-320 20 1 = 10 X 10 3kg