High quality 304 stainless steel with a chrome finish, Not nickel chrome plated like most other available on this site. High quality metal work, no weld spots, rough edges or cheap fabrication New style hidden lock system - won't catch on clothing like a conventional padlock. The Highest Grade materials ensure the cage is super-secure and built to last Discover an unsurpassed level of security and comfort Please see the listings images for exact measurements and detailed images of the cage and components used to create an incredible chastity device Highest production quality without compromise, hand made and hand finished to ensure a near flawless device