The 1″ X 2″ 911MPEJAC12 Small Rock Crusher is designed to finely crush rock and stone like aggregates or your favorite ore type (gold, silver, copper, etc.) from 3/4” (20mm) feed size down to a D50 – 50% passing 25 Mesh (700um). 
This also corresponds to a crushed product P80 size of 80% passing 1.5mm or 14 mesh.
This small jaw crusher and its miniature opening gape of 25 mm X 50 mm, can easily adjust by hand. The CSS, known as the closed-side-setting, can be choked down to effectively pulverize the rocks you feed in.
With a short throw at fast 500 RPM, this small rock breaker acts as a quasi-sample pulverizer without the dust of your typical cheap hammermill, chain beating, impact crusher amateur prospector often fall for and purchase online.
