Package quantity: the package comes with 4 pieces of letter knives; This combination and quantity can meet your daily needs in life and working, and you can lend them to other people in urgent need Quality material: these envelope knives are made of stainless steel which is sturdy, safe, waterproof, impact and tarnishing resistant, not easy to rust, and light in weight; So you can feel safe to use these letter openers made of reliable material Wide range of applications: these stainless steel offices knives can be applied to slitting open envelopes, paper boxes, packages, jute bags, etc.; You can also use these metal knives to help unrip tangled strings, ropes, twines, tape, plastic packages and other soft or thin materials Appropriate size: each of these envelope slitters measures 19 x 1.5 cm/ 7.5 x 0.6 inches in size, namely 19 cm/ 7.5 inches in length, which is a proper size for hand-holding; The plastic handles enhance the friction force so that the envelope knives won't fall off your hands easily