1. Designs to offer a more comfortable and safe operating environment. 2. A unique design that effectively protects the flexible shaft while reducing heat with frictionless technology. 3. By the flexible shaft's ability to rotate both forward and backward with its 0–1500 rpm speed adjustment. 4. Featuring a foot switch for simpler use. 5. A unique lifting support design 6. A 10-meter vacuum hose that is immediately compatible with a vacuum cleaner.