[Compatible with Multiple Series]: The SH98 replacement head is compatible with Philips S9000 Prestige replacement heads. SH98 replacement heads for Philips 9000 Prestige (SP9800) and Series 9000, 8000 electric shavers. Compatible with all SP98XX series shavers; fits models SP9820, SP9820/88, SP9860/85, SP9860/86, SP981X, SP982X, SP986X, SP9863, S8960, S8950, S8980, S8900, SW6700, and others. [High Precision Cutting System]: These blades are compatible with Philips Norelco S9000 Prestige replacement blades SH98 and feature a dual precision cutting system with lift and cut technology. Provides 360-degree shaving with no dead ends. Gently removes beard hair painlessly and cleanly. The round head design helps protect the skin from scratches. [Comfortable Close Face Touch]: The upgraded SH98 replacement heads for Philips 9000 Prestige shavers feature an ultra-thin head design with a slot for shaving long beards and holes for shaving short stubble. Helps ensure a residue-free shave. [Easy Replacement & Installation]: Easy to remove and replace—takes only about two minutes. After installation, apply a drop of oil to each nozzle and run the shaver for 10 seconds for optimal performance. It is recommended to replace the shaving head every 12 months for best results.