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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Tuesday, Oct 6
Manufacturer: Cobra Crusher
Item Weight: 10 pounds
Product Dimensions: 9 x 7.5 x 3.5 inches
Item Package Quantity: 1
Date First Available: July 1, 2014
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Oct 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Easy to use and gets the job done
Reviewed in the United States on January 23, 2020 by Patrick Billings
I would give 5 stars if it were not for the simple fact that the build of the rock crusher seems a little off. I tried several grinders, but the support bracket is impossible to get properly angled. Seems like the plate that is welded to the unit is off angle? All that said, after some tweaking I got the unit working, and it does an awesome job of powderizing the rocks I put in! No luck finding any gold in the samples I have tested so far but I was not expecting any real results with the materials I have gathered, but I really look forward to testing out at my claim as I learn what rock material left behind from the old timers is worth collecting!
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Reviewed in the United States on June 18, 2025 by Kevin R Jackson
Went to home depot and tried every brand known to man and it fits NONE of them. Discovered the attachment tab was welded on in the wrong spot. Speaking of welds, I could have welded this up better than whoever did it. The audacity of charging $450 for such a poorly constructed product. I was willing to spend so much for a plug in and go system that was quality. This is not it.
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Reviewed in the United States on August 27, 2024 by Giovanni Vitalie
Theoretically this thing should work. I’ve tried it on 3 different grinders, the last one the same as in the demonstration. The assembly doesn’t match any of the grinder bolt configurations. It straight stripped the bolt threads on the grinder its demoed on. For the price, its best to spend 2/3’s more and get the real rock crushers. It pulverizes, but locks up fast, stopping. The weld mount plates are off. Maybe they were trying to sell off old designs. No grinder has matched their weld placement. So not really useful.
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Reviewed in the United States on September 8, 2019 by Public Knowledge
Crushes rock as expected
Reviewed in the United States on January 15, 2020 by Sheryl Walker
portable and works well
Reviewed in the United States on May 28, 2019 by Wmgw
This rock crusher does a fine job. It will crush small 2 in. X 2in. rocks into dust in a matter of a minute. Although very small pieces of rock remain intact, they are small enough to either use a pestle and mortar to pulverize them or leave them as they are and pan them separately You certainly will be able to recognize any possible gold still trapped within them..
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Reviewed in the United States on October 21, 2015 by Peterinsky
Not even one star
Reviewed in the United States on March 22, 2020 by Clayton