HQ69xx, 69xx, AT620 (series 1000), 31DB, 6423, 6613, 6424LC, 6843, 6853, 6863, 6900 series High Quality Dual Layers with Fine Steel Blades. Compatible with HQ4, HQ4 Plus, HQ55, HQ55 Plus, HQ56. Fits 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 High precision quality blades are manufactured to meet original specifications. Head replacement is recommended annually. After installation, place a drop of baby oil on each screen and allow the unit to run for 10 seconds. These steps will help ensure proper operation. Color: Silver Material: Plastic + Metal Package Contents: 3 x Head 1 x Brush Only the above package content is included; other items are not included. Note: Light reflection and different displays may cause the color of the item to appear slightly different from the real thing. Measurement error allowance is +/- 1-3 cm.