Stanton Trackmaster II RS Phono Cartridges (Pair) Pair of phono cartridges ideal for beat-mixing DJs Elliptical super-high-polish 0.4-by-0.7 mm diamond stylus tip reduces vinyl burn 20 Hz to 20 kHz frequency response; tracking force of 2 to 5 grams Housed in an aluminum "flight case" with clear Plexiglas top Each cartridge weighs 18 grams and fits any standard 1/2-inch turntable tonearm