A Single Bevel Miter Saw has a saw head that tilts (bevels) in only one direction. In contrast, a Double Bevel Saw can rotate both left and right about the vertical plane, allowing for bevel cuts on both sides without having to flip the workpiece.A Double Bevel Miter Saw provides greater versatility and precision, making it ideal for making complex, decorative cuts on intricate work, such as crown molding, where cut angle precision is critical in both directions.