Newly Designed: Our SH90 replacement heads are equipped with V-Track precision pro blades, which gently guide each hair to the optimal cutting position, allowing even very short beards to be lifted and shaved without causing any irritation to your skin. Comfortable Close Touch: The newly upgraded sh90 replacement heads for Philips Norelco shaver series 9000 feature an ultra-thin head with slots designed for shaving longer beards, as well as holes for tackling the shortest stubble, ensuring a clean shave without any residue left behind. Compatibility: SH90 replacement heads compatible with Philips Norelco series 9000 are fully compatible with Philips 9000 replacement head, including SH90, SH90/52, S9000, S9011, S9021, S9031, S9041, S9111, S9121, S9151, S9161, S9171, S9311, S9321, S9371, S9511, S9521, S9522, S9531, S9711, S9721, S9731, S9911, and S9988 electric shavers Pro Tips for Optimal Performance: To enhance the performance of SH90/62 shaver complete heads, it is recommended to apply a drop of baby oil to each head after installation and allow the shaver to run for 10 seconds. This practice will help ensure smooth and efficient operation of your shaver. Packages & Services: Includes one SH90 replacement head,along with a cleaning brush. We offer a year of hassle-free service and lifetime support. If you have any questions, please feel free to contact us, and we will be happy to assist you. Compatibility: SH90 replacement heads compatible with Philips Norelco series 9000 are fully compatible with Philips 9000 replacement head, including SH90, SH90/52, S9000, S9011, S9021, S9031, S9041, S9111, S9121, S9151, S9161, S9171, S9311, S9321, S9371, S9511, S9521, S9522, S9531, S9711, S9721, S9731, S9911, and S9988 electric shavers