Technical Features for Norelco HQ55 / HQ55PLUS / HQ56(single pack) The Norelco HQ55PLUS is a set of replacement heads for Norelco Reflex Plus razors. The 3 stainless-steel heads in the package needed for each change on razor heads provide 45 lifters and 45 cutters to shave below skin level.HQ55PLUS Features: Fits the following models: 200 300 400 410 482 484 486 500 501 505 600 605 665 700 705 710 715 720 725 750 800 805 815 825 835 850 875 885 895 900 905 915 935 945 950 955 965 968 985 1318 1319 1323 1327 1328 1337C 1601 1602 1604 1605 1606 1608 3405 3601 3604 3605 3801 3805 3865 4401 4402 4403 4404 4406 4413 4414 4417 4601 4602 4603 4604 4605 4606 4607 4608 4625 4805 4807 4816 4817 4821 4825 4845 4852 4853 4861 4865 4885 5426LC 5625X 5812XL 6423LC 6424LC 6613X 6614X 6615X 6843XL 6853XL 6863XL.