Wide compatibility Our products for norelco 9000 replacement heads are perfect compatible with philips series 9000, 8000 series S9011, S9021, S9031, S9041, S9111, S9121, S9151, S9161, S9171, S9311, S9321, S9371, S9511, S95 Comfort Shave -Our produccts for norelco replacement heads 9000 series are compatible with norelco series 9000 are designed with V-Track Precision Pro Blades, which gently position each beard at the optimal cutting position, and even very short beards are lifted and shave by the blades, it will not hurt your skin. Premium Quality:For philips series 9000 replacement blades has stainless steel blades for comfortably close shave. SH90 replacement heads is 360 degrees no dead angle design,Precise clean shave in every area. Easy to replace blade - Firstly pull for philips norelco 9000 replacement heads holder off. secondly replace the shavings blades with new ones,then reattach the shaving head holder. After installation, put a drop of oil on each nozzle and run for 10 seconds to get the best experience. Packages & Services: 3Pcs sh90 replacement blades for Shaver (Foil & Cutter), 1-Pcs Brush；Any questions, please do not hesitate to write us, we will be glad to serve you. (This item is a replacement, not original.) [Premium Quality]--The SH90 shaver head replacement has stainless steel blades for comfortably close shave.Each rotary blade has 3 circular cutting services；The low-friction smoothly along your skin for a close, easy shave ,not hurt your skin.shaving tracks cover 50 percent more skin surface at a time for a close and fast shave