2,Please note that this mounting set is manufactured from high strength steel not alunium since many cartridges manufacturers specifically advise against the use of alunium 3,To get the best from your equipment it is essential to ensures that the cartridges is correctly fit to the headshell making sure you for alays use the shortest that ill accommodate your cartridges / headshell combination 4,This 6, 8, 10 & 12mm perfect for mounting the majority of cartridges Component : Steel 1,This steel set can be sucked by a magnetic.This General cartridges Mounting set contains everything need to fit any cartridges. This selection of , Nut and cater for a full of cartridges depths, Manufacturer: KACCDE