The stylus is a worn-out product, and its normal service life is about 300-400 hours. Except for damage caused by careless operation, the use of excessive needle pressure, shoddy inferior records and severely shaking turntables will shorten the life of the needle tip. As the radius of curvature of the sharpened needle tip becomes larger, its ability to track high-frequency signals in the sound groove decreases. When the sound details are reduced, the treble is gradually poor, and the sound becomes more and more dull, you need to consider replacing the cartridge This AT3600L is a very high-quality cartridge with more than 50 years of production history, and the production technology is very mature. As an entry-level cartridge, the material of the stylus has not been reduced, and the tip is an extremely durable artificial diamond. The needle bar is made of high-quality material, which not only enhances the hardness, but also ensures the sound level Material: plastic Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:As Shown Package Contents: 3 x Replace cartridge(red green blue) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.