This replacement stylus is compatible with the AT-VM700x/600x/500x series. This series offers a lineup of replacement styli with different stylus tip structures and tip shapes, allowing you to upgrade or customize your preferred combination. Since SP records are mono modulation, we recommend using them with a mono body (VM670xSP, VM610xMONO). A diverse lineup of styli to meet your sound quality needs: This model uses a bonded round stylus with a 3.0 mil tip curvature radius. It fits the wide grooves of SP records, ensuring stable playback. Improved stylus tip visibility during operation: While maintaining compatibility with previous models (styli and bodies), this model improves stylus tip visibility by adding a V-shaped cut to the protector as a guide for stylus positioning.