These high-precision replacement shaver heads are manufactured to meet quality standards and are not produced by or affiliated with Philips Norelco. Head replacement is recommended annually for optimal performance. After installation, apply a small drop of oil to each foil and run the razor for 10 seconds to ensure proper operation. Compatible with models: HQ69xx, 69xx, AT620 (Shaver Series 1000), 31DB, 6423, 6613, 6424LC, 6843, 6853, 6863, and 6900 series. High-quality dual-layer cutters made from fine steel. Replaces HQ4, HQ4 Plus, HQ55, HQ55 Plus, and HQ56. Fits Norelco models: 6948XL, 6947XL, 6945XL, 6940LC, 6900LC, 6863XL, 6856XL, 6854XL, 6853XL, 6844XL, 6843XL, 6618X, 6617X, 6616X, 6615X, 6614X, 6613X, 6424LC, 6423LC, HP1318, HP1319, HP1327, HP1323, HP1327D, HP1328, HP1328E, HP1337C, HP1601, HP1602, HP1604, HP1605, HP1606, HP1608, 700RL, 705RL, 710RL, 715RL, 720RL, 725RL, 750RL, 800RX, 805RX, 815RX, 825RX, 835R. Color: As shown Material: Metal Package Contents: 3 x Shaver Head 1 x Cleaning Brush Note: The package includes only the items listed above. Other products are not included. Due to lighting effects and monitor settings, the color in the image may slightly differ from the actual item. Measurement may vary by +/- 1-3 cm.