? [OPEN COVER STOP& SWING TYPE DESIGN]- With OPEN-COVER-STOP safety design, CGOLDENWALL upgraded grain grinder will automatically stop operation when its cover is opened,largely enhancing opearation security.(Without its cover properly closed,the grinder will not start.)Besides, 270°swing type design not only improves grinding effects but also makes powder pouring process more convenient. ? [SUPERFINE POWDER& HIGH SPEED GRINDER]- Power: 1500W; Speed: 28000r/min; Fineness:70 to 300 Mesh; Crush Level: Superfine Crush. →The pure copper commercial motor with 1500W power& 304 stainless steel sharp blades ensure 300g grain grinder can achieve a high speed up to 28,000rpm, except extremely hard material takes 2-3min to grind, normal grains only needs 10-30s to be ground into 70 to 300 mesh superfine powder, contributing to higher working efficiency. ? [OVERLOAD PROTECTION AIR SWITCH&TIMER]- When the grain mill is in an overloaded state, the overloaded protection air switch will pop up automatically to stop the operation, protecting the grinder from being damaged. Besides, the machine is also equipped with a 0-5 min timer for setting grinding time according to your needs.