*PLUMBERSSTOCK EXPERT* responded:
Thank you for asking us at Plumbersstock.com about the Milwaukee 23-66-2585! No, this switch fits Milwaukee electric drills 6790/0299-20/0299-30. For the Milwaukee 0234-1 (SER 532C) electric drill, we have the Milwaukee 23-66-1666 switch. To order the Milwaukee 23-66-1666, please go to its product page, click the Add to Cart button, enter your zipcode and your billing information, and we will take care of the rest. Happy shopping!