Philips Norelco Shaver 3100/4100/4500 Replacement Heads - 3 Pack Dual Precision Electric Razor Blades with High Precision Cutting System - Perfect for Travel, Home & Office Grooming

Doesn’t cut cleanly. I have given the blades three weeks but they still pull. I would not order again.Purchased these to replace worn Norelco blades. They fit and work well but are no sharper than my worn out blades. Will return them for refund.These are ok as replacements. They seem to shave fairly close.I would have given 5 stars but they bite alot. I half expected to find blood from the bite. Never had my electric shaver hurt like this. Almost as bad as dry shaving with a generic dual blade razor.After using awhile I realized the blades are too far apart, so the hairs get pulled in before being cut, causing pain.The blades have a gap big enough for another blade between each one. I am revising my rating to a 2.Do not believe any review that raves about these blades. I have always used Norelco blades in the past but thought I would save some money and purchased these; big mistake. The blades pull and I don't mean just a gentle tug. I have a light beard and shaving with these blades is an exercise in masochism; they painfully and constantly yank out -not cut - whiskers. I plan to throw these out and purchase another brand; so much for saving money. Save your money and face and purchase another brand.The one I replaced that was 6 years old cut better! All this one did was pull out whiskers. Got a refund.Don’t buy. It painful and uncomfortable because it’s pulling out the hairs and not cutting. I went back to my old shaver heads because these do not do the job. They feel used and dull. Pay the extra money and get manufacturer produced heads.These are very inexpensive, but they're not even worth the low price. They are not as sharp as they should be, and don't cleanly cut the beard hairs. They pull and it's an uncomfortable shave.Awful. Been using for a week and the blades aren’t sharp, I have a rash on my face, and it takes me forever to shave. Returning.