Tubular leverset is an economical and easy to install product particularly adaptable for residential use. Guaranteed for over 200,000 life cycles. Can be keyed alike with deadbolts to improve security. Can be master keyed in a simple combination for family and facility use. Solid brass or Stainless steel chassis and latch case, zinc plated for corrosion resistance. Exposed trim is made of zinc die casting electroplated or solid brass. Adjustable 1-3/8 to 1-3/4(35mm-45mm) as standard. Fully reversible for left or right hand doors.