Which type of bar is known for a roller tip?

The type of bar known for having a roller tip is the sprocket nose bar. This design features a small sprocket or roller at the tip, which aids in reducing friction when the chain is running around the edge of the bar. This feature not only helps to extend the life of the bar and chain but also improves the cutting efficiency, particularly when using the saw at various angles and positions. By allowing the chain to move more freely, a sprocket nose bar can enhance the overall performance during cutting tasks, making it a preferred choice in many wildland firefighting scenarios where maneuverability and efficiency are critical. The roller tip design is especially beneficial when making cuts that require precision and stability, as it helps to prevent the chain from binding and reduces the risk of kickback.