The 911JAC12K MINI Rock Crusher is our 'most small' rock crusher for the smallest budget. It contains all the high quality precision pre-cut and ready to weld machined parts of a small jaw crusher. It is a Do-it-yourself version of on Mini Crusher. You need to supply the 1 HP motor of your choice. This 1" x 2" homemade rock crusher is mini in size but large in crushing performance.