Jacobs Drill Chuck For 0522-20 (SER 952A) 18 Volt 1/2" Power Plus Driver Drill
0522-20 (SER 952A) 18 Volt 1/2" Power Plus Driver Drill. Jacobs patented Anti-Lock prevents chuck from locking open. This is the heavy-duty 7000 series. The top-of-the-line in this Jacobs class of chucks.