Which of the following is a common type of saw chain?

The correct type of saw chain among the provided options is the double chisel. A double chisel chain features sharp, square-cornered teeth that are designed for smooth cutting in wood. This design is particularly effective for producing clean cuts in softwood and hardwood, allowing for greater efficiency and precision during the cutting process.

Understanding why the double chisel is a common choice is essential in recognizing its advantages in various cutting applications. Its design allows for faster cutting speeds and better performance, especially in the types of tasks where precision is crucial, such as wildland firefighting or timber harvesting.

Furthermore, while a chipper chain is designed for specific applications—typically generating chips rather than clean cuts—the other options like triangular and round edge chains are not standard types used in general cutting scenarios. Each type of chain has its unique application, but for overall versatility and performance in most cutting tasks, the double chisel is often preferred and widely used.