Method 2 of installing drill bit: fix the screw hole with a hex wrench, and then twist the Chuck nut by hand.
Method 3 of installing the drill bit: remove the copper Chuck with a hex wrench to facilitate grasping and installing the drill bit. After installation, install the Chuck on the small electric drill with a hex wrench.
Finding high quality products in Yiwu
China, Yiwu China Commodity Market (Yiwu wholesale market), the
World's Largest Commodities Trading Center Online.