✔ [LONG RESONANCE]: Extended long handle of smooth aluminum alloy to facilitating bone conduction tests easily and more persistent ringing frequency ✔ [MEDICAL GRADE]: Medical industry standard, clinical grade, weighted nerve/sensory tuning fork for evaluating hearing, vibratory sensation, and peripheral nervous system ✔ [TESTED AND INSPECTED FOR ACCURACY]: Produced from aluminum alloy bar for superior performance and consistent frequency accuracy ✔ [VERSATILE USE]: Ideal instrument for doctors, nurses, medical students, other healthcare professional, and for home use ✔ [LASTING DURABILITY]: Non-magnetic, corrosion-resistant aluminum alloy construction for light weight and durability Cross Canada® is a Health Canada licensed manufacturer of medical devices, and its 128 Hz Tuning Fork (C-128), 128 Cps Medical Tuning Fork is made of aluminum alloy and designed to meet medical requirements. This is an ideal instrument for doctors, nurses, medical students, other health professional, and for home use. The frequency of the tuning fork helps in evaluating hearing, vibratory sensation, peripheral nervous system and for facilitating bone conduction tests. The extended long handle of smooth aluminum alloy to facilitating bone conduction tests easily and more persistent ringing frequency. Cross Canada® medical grade Tuning Fork is produced from aluminum alloy bar for superior performance and consistent frequency accuracy. To keep the tuning fork more accurate, please do not tap it with metal. Specifications: Material: Non-magnetic, corrosion-resistant aluminum alloy Frequency: 128 Hz Overall length: 7.75” Weighs: 72g What is inside the package: 1 x 128 Hz Tuning Fork (C-128)