It is recommended to replace your shaving head every 12 months for optimal shaving performance. Compatible with HQ8 series for Norelco shavers. Fits and Norelco models: 71-Series, 72-Series, 73-Series, 77-Series, 7800, 88-Series, PT/AT7-Series, PT/AT8-Series, SH50/52, and other compatible models. This is a high-quality generic replacement designed to provide reliable performance at a competitive price. Universal heads are compatible with the following models: AT810, AT815, AT830, AT890, PT710, PT715, PT720, PT730, PT735X, 7737X, 7745X, 7775X, HQ7740, HQ7742, HQ7760, HQ7762, HQ7780, HQ7782, HQ778110XL, 8831XL, 8845XL, 8846XL, 8865XL, 8870, 8875, 8880, 8882, 8885, 8887XL, 8890XL, 8891XL, 8892XL, 8894XL, 8895XL, 7800XL, 7812XL, 7340XL, 7345XL, 7350XL, HQ7890, HQ8894, HQ8890, HQ8885, HQ8882, HQ8880, HQ8875, HQ8870, HQ8865, HQ8845, HQ8830, HQ8825, HQ8445, HQ7800, HQ7380, HQ7360, HQ7320, HQ7100, HQ7300, HQ7200. Color: Silver Material: Metal Package Contents: 3 x Cutter head accessories Note: Light reflection and different display settings may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.