A cartridge revised by FJS is a professional replacement of a needle tip. The body, or cartridge, is wear-resistant, the cantilever and diamond are replaceable. The suspension rubbers of this cartridge have also been replaced, and are better than those in a new old stock cartridge, these are around 40 years old and less supple! This MMC 20 fits on all B&O players with the following cartridges - SP 15 MMC 10E/ MMC 20S/ MMC20E/ MMC 20CL/ MMC 4000/ MMC 5000/ MMC 6000. The needle tip is elliptically cut, like it should be. Of course, shipped insured and with tracking code. No warranty on breakage and normal wear. Estimated life span around 2000 hours, certainly on a BeoGram 4000/6000 etc.