This is for either a 2mm, 3mm, 4mm, 18K Gold Plated Stainless Steel Box chain necklace, from 18 inches to 24 inches. Available Lengths: 18" in - Boy's and Womens Necklace 18" - 20" in - Teen's Necklace 22" - 24" in - Men's NecklaceRecommended size:-We suggest Necklace lengths 18"-20" for Boys and Women, and 22"-24" inch for Men.-2mm and 3mm is Unisex.-3mm and 4mm, is commonly purchased by Men. Features: 1.Never Fade Never Tarnish 2.The Box link chain is one of the most popular style chains! 3.These elegant chains are handcrafted in 18K Gold Plated Stainless Steel. Solid and heavy feel. The frames measure 2-24 inches in length and 2-4mm in width. These chains securely lock with a durable lobster clasp. 4.High quality stainless steel has high resistance to rust, corrosion and tarnishing. It will be very durable. ABOUT: This common chain style is a basic, timeless design, made of a series of interconnected, round uniform links. Box chains have been a top choice when it comes to necklace chains, bigger sizes have a masculine touch and are especially popular among men. Smaller, thinner box chains are feminine and delicate, going well with women. Box chains are very strong and don't easily break. They are easy to maintain and care for.