About the Milwaukee 48-66-3350 model Chuck Key
The Milwaukee 48-66-3350 model Chuck Key is a part of the Chuck Series. This key tightens the jaws of the Milwaukee 2.4V Cordless Screwdriver chuck (6539-6, 6540-1, 6546-6, 6547-1, and 6547-22). It allows you with the 48-66-0817 chuck.