What is it? A 2 component kit:  

5gallon lid with hole in center and an anti-spill skirt.  18" Steel mixing shaft with high density (very durable) plastic mixing blade. Drill Not Included. 

Just put the lid on, slide the shaft through the hole...and with any power drill (we recommend 12V or higher) you're mixed and ready within 2 minutes for each pail! The kit is re-usable and works on paint, drywall...you name it!