Increased rigidity and mounting base to provide ultimate protection against mechanical impacts robust double coil filament designed to withstand a wide range of vibration frequencies while maintaining stability high-performance quartz glass to withstand temperature and pressure. New MasterDuty bulbs are designed to give maximum vibration resistance and excellent durability. These bulbs last twice as long and twice as resistant to vibration than average bulbs on the market. Many MasterDuty has a rigid mounting base and better protects against mechanical shock. Moreover, it has also robust fiber with double winding, that can withstand intense vibration and retains stability. Many MasterDuty is the right choice for drivers requiring rigidity and dura
