Broad Compatibility: SH90 replacement heads for philips norelco replacement blades, including S9311/27, S9311/84, S9311/87, S9321/88, S9511/63, S9531/84, S9721/84, S9721/87, S9721/89，S8950/50, S8950/91, SW6700/91, SW9700/83, ensuring a seamless match for many models.
Smooth & Skin-Friendly Shaving: SH90 replacement blades Stainless steel mesh design glides gently on skin, reducing irritation while maintaining close contact for efficient hair removal.
Upgraded System: German-engineered synchronized shaving elements cut millions of hairs effortlessly. Reinforced structure ensures long-lasting durability.
Self-Sharpening Blades: Reciprocating SH90 replacement heads sharpen with use—initial break-in period is normal. Replace every 3-6 months for optimal performance.
Quick Installation & Guaranteed Service: Snap-on design enables tool-free replacement. Includes responsive after-sales support for quality-related issues.
