Material - Made of stainless steel, sturdy and durable, rust-proof, so can last for a long time. Size - There are 2 sizes of locking bolts, 3 inch / 3 inch / 4 inch. Easy to Install - Align the bolt with the door and door frame and draw a point with a pencil. Drill the holes in the frame and door and screw them into the wood with the screws provided. Safe Enough - The sliding bolt action provides a solid closing mechanism, it can be inserted to secure the door, providing enough strength and stability for any door. Extra Security for Your Bathroom, Bedroom, Closets and Other Interior Doors Widely Used - Suitable for doors, shed, bathroom, toilet, window, wooden doors, pet door, etc. Product Description - These sliding bolts are ideal locks for bathrooms, bedrooms and wardrobes. They are made of stainless steel, providing strength and stability to any door. - This heavy duty sliding bolt is perfect if you want to add a little extra security to your home. - The sliding bolt is easy to attach - simply align the bolt with the door and door frame and draw a dot with a pencil. Drill the holes in the frame and door and screw them into the wood with the screws provided. Specifications: - Condition: 100% High Quality Brand New. - Material: Stainless Steel. - Size: 2 inch / 3 inch / 4 inch Note: - Manual measurement may exist 1-2MM difference. - There may be slight color differences due to different displays. - Thank you for your kindly understanding.