Apollo hammers. "Lightweight" and "heavy" variations. There were actually 6 variations, 3 of which flew. The one missing here, is the heavy hammer flown on Apollo 17, which was the same design, but had blue silicon "grip" sleeves on the handle.
Duplicated from blueprints of the original Apollo hammers.
These examples are 3d printed, but the final product will be steel and aluminum per the specifications of the originals.
These will be a pretty limited run, as they will be expensive to produce.