It is recommended that you replace your shaving head once every 12 months for maximum shaving performance. Compatible with HQ8 series for PHILIPS norelco shavers.Fit for PHILIPS and Norelco models / types: 71 -Series, 72 -Series, 73 -Series, 77 -Series, 7800, 88 -Series, PT / AT7--Series, PT / AT8-Series,SH50/52,etc. This a Generic High quality replacement for a fraction of the price and good quality. 1. These universal heads are compatible with the following for PHILIPS models: AT810, AT815, AT830, AT890, PT710, PT715, PT720, PT730, PT735X, 7737X, 7745X, 7775X, HQ7740, HQ7742, HQ7760, HQ7762, HQ7780, HQ7782, HQ7782, HQ7782, HQ7780, HQ7782, HQ7782, HQ778 110XL, 8831XL, 8845XL, 8846XL, 8865XL, 8887XL, 8880XL, 8881XL, 8883XL, 8890XL, 8891XL, 8892XL, 8894XL, 8895XL, 7800XL, 7800XL, 7812XL, 7350XL, 7345XL, 7340XL, 107350XL, 107350XL, 10XL, 7350XL, 7350XL HQ7890, HQ8894, HQ8890, HQ8885, HQ8882, HQ8880, HQ8875, HQ8870, HQ8865, HQ8845, HQ8845, HQ8830, HQ8825, HQ8445, HQ7800, HQ7380, HQ736300, HQ73200, HQ7360, HQ7360, HQ7360, HQ7360, HQ7360 HQ7360, HQ7100, HQ7100, HQ7360, HQ7100, HQ7100, HQ7300, HQ7360, HQ7100, HQ7360, HQ7100, HQ7360, HQ7360, HQ73, HQ7100, HQ7360, HQ7200, HQ7360, HQ7Q, HQ73, HQ73, HQ73 colour:Silver Material:metal Package Contents: 3 x Cutter head accessories Only the above package content, other products are not included. Note: Light reflection 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.