Stanton Groovemaster II Pro Phono Cartridges (Pair) (Discontinued by Manufacturer) Pair of phono cartridges ideal for club mixing, scratching, and other DJ uses Super-high-polish 0.7 mm diamond stylus tip diamond reduces vinyl burn Gold finish and gold connector extend tip life while standing out 20 Hz to 20 kHz frequency response; tracking force of 2 to 5 grams Each cartridge weighs 18 grams and fits any standard 1/2-inch turntable tonearm