Braun Series 9 replacement blades are recommended to be replaced every 18 months. - Brand: BRAUN - Model: Series 9 - Country of Manufacture: Germany - Model Number: 92S - Recommended Replacement Period: 18 months 【Compatible Models】 Compatible with F/C90S, F/C90B, F/C92S, F/C92B, and F/C94M. Also compatible with 9030s, 9040s, 9050cc, 9075cc, 9240s, 9240s-P, 9242s, 9250cc, 9250cc-P, 9280cc, 9280cc-P, 9070cc, 9090cc, 9090ccE2, 9093s, 9095cc, 9260s, 9260s, 9290cc, 9291cc, 9292cc, 9293s, 9295cc, 9295cc-P, 9295cc-SP, 9296cc, 9296cc-P, 9297cc, 9299cc, 9299s, 9355s, 9355s-TO, 9375cc, 9394cc, 9395cc, 9399s-SP, 9320s, 9340s, 9345s, 9350s, 9355s, 9360cc, 9365cc, 9370cc-SP, 9375cc, 9381cc, 9384cc, 9390cc, etc. ※Some sellers offer the same package, but some may sell products of poor quality, so it is recommended to carefully check the reviews before making a decision.※ Thank you for viewing.