Quality & DesignBlack. Made of Zinc Alloy and Rubber Bumper. Nice and smooth finish. No spring zing sticks on the bottom of your door, nothing floor mounted, no more door banging. Long-lasting quality makes it strong enough to withstand long-term daily use. You will love how they arent so noticeable but works effectivelyUniversal fit for both right and left hand doors. Adjust the rubber bumper screw until the door stops where it should while still allowing enough space for entry/exit.ApplicationNo more dents on the wallboard or holes in the trimSay goodbye to pay for repair bills or monthly upkeep cost. Soften the blow, the door gently bounces rather than stopping hard. Using these, you are able to safely place things behind the door without worrying about damage from people opening the door too quickly, like upright freezer or cloth hooks, etc. Prevent door swinging back too far and hitting furniture near the door.Kids ProtectionDoyouhavesuch worries? Your naughty kids willstumble against the floor mount door stop when just learning to walk? Will bust their toes on the floor door bumper in the dark? Always like to step on the floor board mounted door stops and rip them out of the wall? With the thoughtful feature, DonYoung Hinge Pin Door Stop is designed to be inserted into any of the door hinge pins, which will protect your children from being troubled and keep door banging noise away.Package Contents & Easy Installation4 x Hinge Pin Door Stopper. No Drilling Needed. It will take just a few minutes to finish the installation and adjustmentSimply remove the pin from doors top/bottom hinge, slip door stopper onto it and then slide the hinge back in.ServiceWhether to buy or not, whether pre-sale and after-sale, our company provide 24-hour online service so as to solve the customers' worries behind. Item arrives damaged/ Missing parts receivedIf the above issue occurs, please email us via amazon immediately. Our Customer Service Team will figure out the issue and provide a satisfying solution accordingly.