Material : Available in Zinc Alloy, Brass, Steel Type : Half Mortise Size : Cylinder : 7/8"(23mm) Dia. Availavle length : 18mm/23mm/30mm L. Backplate : 2” W. X 1-1/2”Depth. Finish : Brass Plated or Nickel Plated Parts : 2-keys / 1-barrel ring / 4-screws.