MY DESK Letter Opener - World's Most Efficient Plastic Razor Blade Paper Knife / Envelope Slitter Set in Sharp Black - Pack of 4 EFFICIENT- Slice like butter through paper envelopes of all styles and sizes A GREAT VALUE--Economy pack of 4 plastic letter openers at a big savings over the competition EASY TO USE- Save time, energy and your manicure with manual letter openers SAFE AND EFFECTIVE- The concealed blade reduces chance of cutting skin, but still allows paper to glide through and slice open Professional Quality - Intent for professional letter opening, function as a envolope slitter - Work with all style and type of envolope