Mini Vibrating Sifter - 11.75 x 4" (Compare to Custom Cones)Automatic Vibrating Sifter Mini 11. 75 x 4" Sifting your plant material is a great way to remove stems automatically, and if you are producing a premium product, it is always best to sift out any stems! Our Automatic Vibrating Sifter Mini 11. 75 x 4" was explicitly designed with plant material processors in mind the stainless steel construction and screens ensure you can easily clean our sifter and the screen sizes are fine tuned for the most common