1. Cangle saw blades have angled edges and are primarily used for chamfering metal, while Rangle saw blades feature rounded edges and are designed for woodworking. 2. This pneumatic 45degree mini chamfering machine is lightweight, compact, and easy to operate singlehandedly. With the included wrench, you can adjust the chamfer size and the blade. 3. This pneumatic chamfering machine offers versatile applications, capable of performing R/C chamfers, rounding holes, and processing irregular or straight edges on various materials such as steel, aluminum, copper, and acrylic. 4. The mini deburring and chamfering tool features a thickened adjustment knob with a 15 block valve for the air grinder, allowing flexible gear speed control. The chamfer size can be adjusted as needed, and a safety switch prevents accidental activation, ensuring secure operation.