Spline size for 39-344?

A quick learner from Buffalo, NY says:
Could you please let me know the spline measurement for the handle on part #39-344? Do you sell any replacement handles that would fit onto the same crank that come in a black or bronze color?

Thanks,
Ben
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Dave Sr. from SWISCO responded:
The 39-144 uses a handle with a 5/16" spline. The 39-274 shares this, but the color is different. You may be able to paint it to match.
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