Compatible with Multiple Series: SH50/52 Replacement Heads for Philips Shaver Series 5000 (S5xxx), AquaTouch (S5xxx), AquaTouch (AT8xx, AT7xx) and PowerTouch (PT8xx, PT7xx).^ Newest Upgrade: The upgraded SH50 replacement head has an ultra-thin head, with a slot for shaving long beards, and a hole for shaving the shortest stubble. The skin-friendly design of these SH50 replacement heads allows smooth skin contact and comfortable shaving.^ High Precision Cutting System: SH50 Replacement head blades for Philips Shaver has precision cutting system. 360 degrees without dead ends. Remove your beard gently, painlessly and more clean, round head design perfectly protect your skin from scratching.^ Easy Replacement: Easy to take off and replace a new head- just two minutes. After installation, put a drop of oil on each heads and run for 10 seconds to get the best experience. It's recommended that you replace the shaving head every 12 monthsfor the best shave result.^ YORSMI What You Will Get: 6Pcs Shaver Head Replacement (Foil & Cutter). Any questions, please do not hesitate to write us, we will be glad to serve you.