Material: Die CastFinish: AluminumDesigned For Wood Or Metal Screen And Storm Doors 1-3/4" Hole SpacingFits Wood Doors From 5/8" To 2" Thick, For 2" Thick Doors Pan Head Machine Screws 8/32" X 2-3/8" Are Required And Must Be Purchased Separately (qty 2)Interior Locking Mechanisim Provides For Enchanced SecurityDual Locking Design, Exterior Key Lock And Separate Interior Locking MechanismComes With Screws