Arredondo powder bar?

[Bill Steele]

I like to load a couple of pretty fine powders that also happen to be very hard kernels that when leaked from their appointed place can damage the inner workings of my powder drop.

I have read some good things about the Arredondo powder bar and how it might address these issues.

Anyone out there spend the money for one of these gems? If so, I would love to hear your impressions and what powders you have used with it.