The ASTRA high-security 35/35 Thumb Turn lock by Lock & Lock is a modern-style cylinder lock suitable for residential and security doors. Made of stainless steel, brass, and nickel with a satin finish, it features a universal mounting design and comes with a key. This ANSI Grade 1 lock offers top-notch security and durability, backed by a 5-year manufacturer warranty. Designed in the United Kingdom, this silver-coloured lock is a reliable choice for ensuring the safety of your home or property!! Any size thumb turn / key key Top locks!!!