High Quality: Letter Opener Slitter is made of high quality plastic and concealed stainless steel razor blade, more safety than a traditional steel letter opener.Portablel Size: Letter Opener Envelope Slitter size is 3*1.8*0.1 inches, light weight and small size design are for easy to carry, convenient for putting in pocket or bag, as the same time, ideal for a business trip.Keychain Hole Design: Include 5 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 to your keyring, convenient for use outdoors or indoors.Widely Use: Our letter openers with razor blades make you could open the envelopes, mail, and packages quickly, perfect for home or office use, which women, men, and teens could use.Please note: Because the product is a mini-size part, children under the age of three are not suitable for use. It can be used with parents.