Double Ball Bearing - Increases load bearing capacity and durability, Excellent performance at low voltage - Provides performance even at 180V,Full Alluminium Body - Increases durability and makes the body lighter, High air delivery - Improves the feel of air with higher air delivery, Quick-Start High Torque Motor - Provides instant comfort by achieving high performance quickly, Rust Free Powder Coated Finish - Improves durability by ensuring protection against rust and providing a super clean surface, Superior ball bearing gives whisper quiet operation and longer life. Superior grade electric steel lamination for longer life and low power consumption