5 Portable Rock Crushers for Gold Prospecting + Best Tips
WEBNov 9, 2021 · This portable rock crusher is made of highstrength solid steel, coated with a black finish for extra rust, and is corrosionresistant. The diameter of the pipe is approximately inches wide. The base plate is 1/2 inch thick for stability and durability. The hammer/plunger weighs around 4 lbs. Highlighted Features: