MARSHALLTOWN Quik-Mix Mixers are ideal for stirring and blending paint, drywall mud, and concrete products. The Quik-Mix Mixers work with all 7⁄16” or larger speed drills and a limited number of ⅜” slow speed drills. The blade is securely welded to a 28" x ⅜” or a 36" x ⅜" hex shaft, both with the blade measuring 8 ½" x 4 ½”. Choose the best length for your needs and have a quality tool for mixing material.