High QualityLetter Opener Slitter is made of high quality plastic and concealed stainless steel razor blade, more safety than a traditional steel letter opener. Portablel SizeLetter Opener Envelope Slitter size is 3*1.8*0.1 inches, light weight and small size design are for easy to carry, convenient for put in pocket or bag, as the same time, ideal for a business trip. Keychain Hole DesignInclude 12 pcs mail opener with 4 different colors, black, white, red and green, enough for your daily need and gift for others. A keychain hole design makes it could attach on your keyring, convenient for use in outdoor or indoor. Widely UseOur letter openers with razor blade make you could open the envelopes, mails, packages quickly, perfect for home or office use, women, men, and teens could use. Please noteBecause the product is a mini size part, children under the age of three are not suitable for use. It can be used with parents.