High Quality: The letter opener slitter is made of high-quality plastic and features a concealed stainless steel razor blade, offering safer performance compared to traditional metal letter openers. Portable Size: The envelope slitter measures 3 x 1.8 x 0.1 inches, with a lightweight and compact design that is easy to carry. It conveniently fits in a pocket or bag, making it ideal for travel or business trips. Keychain Hole Design: Includes 5 mail openers in 4 different colors—black, white, red, and green—sufficient for daily use and suitable as gifts. The keychain hole allows attachment to keyrings for easy access at home or on the go. Wide Use: These letter openers with sharp razor blades allow quick and efficient opening of envelopes, mail, and packages. Suitable for home or office use, and convenient for men, women, and teens. Note: This product contains small parts and is not suitable for children under 3 years old. Adult supervision is recommended when used by minors.