BBH-1 Standard Flex Bump Hammer
There are bump hammers that have weights included so you can tweak them until they, hopefully, end up right. Not with the bump hammers that Brockhage offers. These hammers (BBH-1, BBH-2) are precisely balanced and weighted before they leave the factory. They don't need no stickin' weights. They are just the way they should be so you can spend your time getting results in your key bumping practice.
A round head instead of a square one seems like a small thing, but with a round one you're less likely to rap a finger when you miss the key. That's a plus.
In a nutshell:
Tool Type: Bump Hammer, minimal flex
Features: One-piece, no weights required