Compatible with Multiple Series: SH50/52 Replacement Heads for Shaver Series 5000 (S5xxx), AquaTouch (S5xxx), AquaTouch (AT8xx, AT7xx), and PowerTouch (PT8xx, PT7xx). Newest Upgrade: The upgraded SH50 replacement head features an ultra-thin design with a slot for shaving long beards and holes for capturing short stubble. The skin-friendly design ensures smooth contact and a comfortable shave. High Precision Cutting System: SH50 replacement head blades feature a precision cutting system with 360-degree coverage and no dead zones. Gently removes beard hair without irritation for a clean, close shave. The rounded head design helps protect skin from scratches. Easy Replacement: Simple to remove and replace—takes just minutes. After installation, apply a drop of oil to each head and run the shaver for 10 seconds for optimal performance. It is recommended to replace the shaving head every 12 months for best results. What You Will Get: 6 Pcs Shaver Head Replacement (Foil & Cutter). For any questions, please —we are happy to assist.