[Packages & Services]: You will get 3pcs HQ9 replacement blades for Philips Norelco. We will support the exchange and return within 30 days, please feel free to buy. If you have any questions about the product, please feel free to contact us and we will be happy to answer them for you. [Installation Tips]: After installation, put a drop of baby oil on each head and let the shaver run for 10 seconds. These steps will help keep your shaver running smoothly and properly. It is recommended to replace the hq9 replacement blades every 12 months for optimum performance. [Smooth Shaving]: The hq9 norelco replacement head is newly upgraded, With a precision blade cutting system, the round head is designed with rounded edges that glide smoothly on the skin and provide a protective shave. Get a comfortable dry shave while protecting your skin from nicks and cuts. [Product Compatibility]: Suitable for norelco replacement heads hq9 models, 8140XL, 8150XL, 8160XL, 8170XL, 8171XL, 8175XL 8240XL, 8250XL, 8251XL, 8260XL, 8270XL, 8280XL 9160XL, 9170XL, 9171XL, 9190XL, 9195XL & 9199XL, HQ9199, HQ9190CC, HQ9170, HQ9160, HQ9140, HQ9100, HQ9090, HQ9080, HQ9070, HQ9020, HQ8290, HQ8270, HQ8260, HQ8250, HQ8240, HQ8173, HQ8172, HQ8170 HQ8160, HQ8155, HQ8150, HQ8140, HQ8100 and more. [More Comfortable]: 360 Degrees without dead ends. Remove your beard gently, painlessly and more clean, round head design perfectly protects your skin from scratching. Non-Original Philips Norelco HQ9 replacement heads, this a high quality replacement for a fraction of the price.