18mm

“One way to avoid dimpling and deburring while making holes in tube and pipe is to use annular cutters. Because

The general purpose, Industrial Metal drill bits are of a higher quality and are more precise when drilling and are thus suitable for intermediate skilled level users. The bits are harder wearing and are thus the perfect choice for tradesmen or users faced with a medium to heavy duty drilling task.

Application: An auger drill bit is used to bore holes in timber. It is great for drilling holes in thatch