Usage Tips:24 - Hour Door Guardian: This universal butterfly spring door closer can make your door close automatically, solving the problem of family members forgetting to close the door and pets entering and exiting freely. It also prevents the loss of cold/heat, making life more convenient and effortless.Wide Range of Applications: This spring hinge door closer with an internal diameter of 0.75 inches, fits on most door butt hinge pins, is suitable for a variety of doors, including bathroom doors, kitchen doors, study doors, screen doors, and more.No-Drill Installation: Install the self-closing spring door closer without the hassle of drilling any holes - simply close the door, lift the hinge pin, effortlessly slide in the door closer spring, and let it unfold. That's all you need for a hole-free setup. Due to the excellent elasticity of the spring, it is essential to wear gloves during installation.Durable Steel with Rubber-Wrapped: Meet our hinge pin door closer - a stainless steel door closer with a chic chrome finish, making it durable. Wrapped in tough rubber at both ends, the door closer spring won't leave any marks on your door.Colour:SilverMaterial:stainless steelPackage Contents:8 * Butterfly Spring Door Closer