1. color: overlord drill is bright and clear, twist drill is light yellow or slightly brown.

2. Source: Wang Ba has a large diamond production and can be made by hand; Twist drills are rare and can only be found in specific mines or jewelry stores.

3. Features: Wang Ba drill is bright after cutting, but the surface of twist drill has "twist line", so it is difficult to polish high quality.

4. Working principle: Overlord drill has high impact frequency and continuous impact force, while twist drill has low impact frequency and small impact force. Twist drills drill holes by rotating and cutting, with two or three grooves, while overlord drills drill holes less.

Generally speaking, there are significant differences between Wang Ba drill and twist drill in color, source, characteristics and working principle.