1. High-quality materials, continuous, efficient and simple to use. 2. correct for Philips: S1000 S3000 S4000 S5000 S500 XZ5800 XZ580 SW175 collection 3. The shaving head should be changed each 18 months. 4. Changing the shaving head can increase the shaving impact by way of technique of 25%. For preferrred performance, clear regularly. 5. Replace the pinnacle to revive your shaver to 100% functionality High superb and durability. Easy to install. Sealed container. Name: Razor Blade Replacement for Philips Colour:silver Material:Stainless steel Package Contents: 6 x shaver blade Only the above package content, other item should not included. Note: Light reflection and assorted reveals could cause the colour of the item in the picture a bit of diverse from the real thing. The size allowed error is +/- 1-3cm.