The Patron BUSH-HP-3005-M is a bushing kit for the rubber shaft in an HP 3005 cartridge, listed with reference RC2-0671. The bushings hold the shaft in place while allowing it to rotate inside the cartridge, supporting the cartridge’s shaft assembly during operation.
In some cartridge designs, a bushing can also conduct electricity between the transfer contact and the shaft. This kit is identified for the HP 3005 cartridge; the listing does not specify dimensions or package contents beyond the kit description.