Amazon®: Customer reviews: Patented Hand .
Patented Hand Operated Jaw Type Ore Crusher Grinder ... The Crazy Crusher takes hard pegmatitix rocks from 2+ inches down to ball millready fines in just a couple of minutes. The small footprint means that it takes up very little room in my shop, and it''s orders of magnitude quieter than using a dolly pot and hammer like I had been. Goldquest shipped the Crazy Crusher the day I ordered it ...