Weight difference

Anybody know the difference in weight between a 9" drum spindle and a 10" drum spindle? Thinking of switching my front brake setup, but it requires a 10" drum spindle.
wilwood race brakes are very light weight and call for a 9 inch drum brake spindle. Strange race brakes call for a 73 up disc brake spindle. Much heavier spindle but stronger for landing.

We went with the 73 style and the strange brakes because you can get a 2 inch drop 73 disc spindle.

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