The industry standard tool for evaluating hearing and vibratory sensation. Nerve/Sensory Evaluators Tuning Forks Clinical Grade Without Weight 512 cps Weighted Tuning Fork features: • Non-magnetic, corrosion resistant aluminum alloy construction • Weights 1/3 of a comparable steel tuning fork • Produced from a 3/8" x 1" bar stock for superior performance and consistent frequency • Extra long 2" handle of turned smooth aluminum facilitates bone conduction tests