【Powerful Motor】： Made of high-quality engineering plastic and die-cast aluminum, the powerful motor of this electric mixer can maintain its service life and drive the mixer at a speed of 10-3000 rpm 【Timer】Built-in timer for extra safety - 0-120 minute timer range provides extra safety and precise operations. 【Specifications】: Mixing length: 9.4"/12.4"; mixing blade diameter: 0.7"-2.5", noise: less than 40 decibels. 【Effective】The stainless steel stir bar of this overhead magnetic stirrer can withstand years of use without corroding or rusting, helping to achieve the most accurate mixing results even in very challenging applications. 【Widely Application】The lab overhead stirrer is equipped with laboratories,medical reseaech,university,food industries,petroleum,chemical and so on.