- steel, aluminum alloy
- Concrete drill bit set– wood, also for plastic, walnut, amber, beads, beeswax, olive nut, small model kit etc.
- Single ended hand drill– can be used as a hand drill with small wire gauge bits
- Masonry drill bit set– hand-pressure rotary drilling, time-saving, convenient and quick
- Hand drill set– mini chuck, used for miniature rotary drill of jewelry tools, accurately and efficiently
- Drill bits sets– made of high grade material, in use