The only mixer on the market with a patent pending design to be used in any quick disconnect shaft such as an impact gun! Never comes loose like a standard hex shaft does in a drill, just clicks in and ready to go. Sick of looking for a paint can opener? We solved that problem. We notched the end of the shaft to be used as a paint can opener as well instead of prying and hacking at it with a screw driver. Perfect for mixing Drywall mud, paint, cement, and much more!