It is recommended that you replace your shaving head once every 12 months for maximum shaving performance. Compatible with HQ8 series for Norelco shavers. Fit for 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 is a generic high-quality replacement head, offering new and reliable performance at a fraction of the cost. Universal heads compatible with the following 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 Color: 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.