Privacy ProtectionInterior door knob is ideal for use in the bedroom, bathroom, office, or any other private place by locking the inside without a key to secure your privacy. Door Compability Door Locks for Bedrooms are perfect for left or right doors with adjustable latches fitting 2-3/8" (60mm) or 1-3/4" (40mm) backsets, catering to your varied needs. Premium Material Constructed from heavy-duty zinc alloy and with the certification of ANSI Grade 3, it ensures durability and rust resistance that will last years. Modern Design Feature a perfect matte black finish, our door knob provides a simple yet stylish touch to your private space. Easy to Install Easy to assemble like a breeze with just a screwdriver required.