Reddit reviews My Desk Letter Opener - Envelope Opening Set, Mail Slitter with Razor Blade Paper Knife - 4 Pack

Efficient - slice like butter through paper envelopes of all styles and sizesA Great Value - economy pack of 4 plastic letter openers at a big savings over the competitionEasy to Use - save time, energy and your manicure with manual letter openersSafe and Effective - the concealed blade reduces chance of cutting skin, but still allows paper to glide through and slice openProfessional Quality - intent for professional letter opening, function as a envelope slitter - work with all style and type of envelope