The ultimate traditional double hung Brass sash lock. Forged in solid brass with stainless steel springs. This lock was designed from the first to be a fine sculptural piece of hardware. As you would expect from The Harwick Architectural Hardware Company, LLC., the action of the lock is like a fine piece of machinery. Keeper will wrap a center muntin, and if notching is used, the keeper hides it. Available in multiple finishes: Polished Unlacquered Brass Satin Unlacquered Brass US10B Oil Rubbed Bronze Satin Nickel Plated Polished Nickel Plated