CompatibilityThe newly upgraded Philips replacement heads have ultra-thin heads with slots for shaving long beards and holes for shaving the shortest stubble. Ensure that there is no residue after shaving. The comfortable cutting blade system with rounded contour heads glides smoothly over your skin while protecting it from nicks and cuts.ComfortableSuitable for Philips Shaver S7000 heads S7710 S7310S7530S7370 Carmen knife holder accessoriesHigh QualityOur Philips heads can lift and cut all hair and remaining stubble in just a few strokes. 360 degrees without dead angle, gently, painlessly and cleaner remove beards, the round head design perfectly protects your skin from scratches.Easy to ReplaceAfter installation, drop a small drop of baby oil on each head and let the shaver run for 10 seconds. These steps will help ensure that your shaver runs normally and smoothly. Replace the replacement head every 12 months for best results.