鑰匙，1/2" 與 5/8" 鑽夾頭

After struggling with a worn-out chuck key for months, this one's 102mm handle gives me plenty of leverage to really tighten the bit. It fits both my 1/2" and 5/8" chucks without any wobble.

Those 11 teeth mesh perfectly with the gear on my 5/8" chuck, no slipping at all. The 8mm pilot centers easily, and the handle is long enough to get a tight grip without feeling awkward.

The 102mm handle gives me plenty of leverage to tighten chucks without straining my wrist. Had to swap it between my 1/2" and 5/8" drills and it fit perfectly on both.