Hammer type, direct drive, c/o a cylindrical chamber and a central rotor w/a max. Speed of 10000 r.P.M., 18 stainless steel hammers, a removable stainless steel screen, six interchangeable screens with perforation sizes of 0.008, 0.010, 0.012, 0.024, 0.040 and 0.050 in. Respectively, 1/2 h.P. Motor, two elastic top cotton bags, elec reqt 115 v, ac or dc