The DT-25H SD is an alternative needle (replacement needle) that performs identical to the factory needles that are made by the manufacturer for Victor record cartridges. This replacement needle is a "synthetic diamond needle" type. This is a generic model that plays a regular range of sound ranges, with a standard conical shape. General life is about 200 hours. The successor to JV.30-25 DT-25H RED (4951586171409).