Quick Installation in 1 Minute - Just confirm the position of door stopper to be installed and mark it, remove base to locate included screw, fix the base to the wall with screws, align the hole on the base plate and screw the spring part inside of the base. Rubber Bumper Tip - Equipped with a soft rubber tip, our spring door stop keeps the wall and door knob in a perfect condition and also provides you with a quiet space when in use Applicable to a variety of scenarios - Satin nickel finish adds a beautiful touch to your home decor and the spring door stop design allows flexibility with door. You can install it in any place such as kitchen, bathroom, living room. Durable & Sturdy - Ravinte stopper is made of high-quality steel to ensure durable use. If you encounter any problems, please feel free to contact us, we will reply to your message within 12 hours and provide you with a satisfactory solution. Dimension - Base diameter: 0.98" (25mm), Length of black door stop: 3-2/5"(86mm), Length of screw: 0.82in(21mm)