Feature:Easy to install.Clean the before installing.Within 18 months on average, a for shaver will cut an average of 6,000,000 hairs. In accomplishing this substantial task, the cutting parts will gradually wear out and your shave may become less close and comfortable. Therefore we recommends changing your shaver's foil & cutter block every 18 months to maintain your shaver's maximum performance. For a perfect shave every day.Suitable for 5 series models: wfs1 wfs2 530 550 590 8585 8985 8995 8975 5643 5645 5646 5647 5649 5751 ContourPro550, ContourPro560, ContourPro570CC, ContourPro590CCcolour: as shownMaterial: stainless steelPackage Contents:1 x shaving accessoriesOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.