Features: High quality aluminum alloy material, industry standard, clinical grade, aggravating nerve / sensory regulating fork, used to evaluate hearing and vibration. Non magnetic, corrosion-resistant aluminum alloy structure, light weight and durable. The extended 2 inches (about 58mm) handle turns smooth aluminum for bone conduction testing. Equipped with a silicone hammer as a percussion tool. Comes with a soft pouch to protect the tuning fork. Suitable for ear picker, ear picking teaching, hearing test, etc.