ATN 3721 New quality hi-fi diamond stylus For Audio Technica or Thomson AT-3721 cartridge or SHARP STY121 C121 STY157 C157 styluses and cartridges Replacement stylus ATN-3721 = Zafira 5188 & 6879.2 ATN 3721 New diamond hi-fi quality stylus Fits Audio Technica AT-3721 Cartridge Stylus replacement ATN-3721 = Zafira 5188 & 6879.2 For Audio Technica or Thomson AT-3721 or SHARP cartridge and stylus STY121 C121 STY157 C157 .