Pneumatic Rock Crusher and Mortar | High Plains Prospectors
12 reviews. This is a complete set with the pneumatic rock crusher and the mortar. Rock Crusher Details: 7.75" x 2" with a .400" outside diameter end that mounts in hammer. This air hammer attachment is custom made for the modern day gold prospector or miner. Fits in the average hand held pneumatic air hammer. Pulverizes hard quartz easily.