The replacement head fits SensoTouch 3D 1200 series Razor models: RQ10 RQ1250 RQ12 RQ1280 RQ1180 RQ11 Fully intelligent facial contouring system that hugs the curve perfectly Three independent floating cutting heads on the shaving head unit can be rotated in all directions. This unique combination ensures that the skin remains perfectly adjusted to the curve, making it easy to capture even the finest neck hairs The new shaving head has three independent shaving units that allow you to increase the shaving area by 50% compared to a normal single-turn rotary shaving head Non-original spare part. Head replacement For the best shave, it is recommended that you change your head every 6 months,Product is not sponsored, endorsed by, or affiliated with any brands it fits, including Philips