It is recommended that you replace your shaving head once every 12 months for maximum shaving performance. Compatible with HQ8 series for shavers.Fit for and 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 replacement for a fraction of the price and . 1. These universal heads are compatible with the following for 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.