RW20 DZM Stirring Motor Sturdy, streamlined stirring motor for jobs up to 5 gal (water) with constant power drive. Two speed ranges for universal use from 60-2,000 rpm. Chuck range 1-10 mm, stirring elements can be plugged through. RW20 DZM is a equipped with an integrated speed display. Also available in the standard RW20 without digital speed display. Request a quote or additional information.