Fit for Philips Marantz..... * for all CDM-4 transport(Marantz CD-52 , 50 , 60, 62 ,72, 80...... ) * for PHILIPS CD-500 CD-502 CD-614 CD-630 CD-850 CD-850mkII............ * It"s stronger plastic Gear with belt. * It can match the same Gear (ten teeth)as the CDM-4 transport .