The PN-110 SD is a replacement needle that performs identical to the original needles (replacement) that are not the manufacturer made for use with Pioneer 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 the P.53-110 PN-110 BLU (4951586331704).