It can be used on wood door, security door, screen door. It can be used on both indoor and outdoor door The door handle can be locked inside or opened from the outside with a The door handle set is make of zincs Alloy, waterproof and rustproof, Enduring Door handles can be used on both left and right closing security door, Security Screen Door Handle, sliding door handle includes spindles and fasteners and all accessories need for installation, Manufacturer: Xinsheinelry