With the ability to finely mix all kinds of material, this innovative ribbon design ensures an even mix and is ideal for a range of applications such as drywall mud, paint and EIFS adhesives and coatings. Made from high-quality plated steel, the Marshalltown Ribbon Mixer creates efficiency and consistently on the job working excellent at 500 to 900 rpm. The 5 in fit a 1/2 in or larger speed drill.