For measuring degradation of mineral aggregates from abrassion, impact and grinding. AG-701 Los Angeles Abrassion Machine 1 Set Frame Welded steel frame, 8 and 12 cm ( steel profile) Drum 1/ 2 " thick steel plate 28 " inner diameter 20 " inner width Automatic Counter Digital, module system for easy maintenance Panel button: ON-OFF-RUN-STOP-JOG-RESET-500-1000 Power Electromotor, dual voltage 110-220 V, 750 Watt, 1 Phase, Heavy duty speed reducer. Drum Speed 30-33 RPM AG-702 Steel Ball Steel 1 7/ 8 " diameter 12 Pcs AG-703 Catching Pan Galvanized steel 1 Pc Also required, but not part of this set : AG-224ASieve No. 12 GE-157 Heavy Duty Solution Balance GE-174 Drying Oven GE-363 Mixing Bowl GE-801 Round Scoop |