Protect doors and wall: spring loaded door stopper protects interior walls from shielding impact damage caused by contact between wall and doorDampening: these springs offer great cushioning effect, reduce the impact on the wall, avoid wall door handle pullSteps to install: put the screw into the hole in the metal plate, screw on the wall or door, then turn the spring on the plate, you have a choice for door or baseboard installationDependable performance: wide base provides spring support and disperse spring force impact; the thickness of the spring has strong toughness, can easily bend and return to its original shape; the rubber tip to avoid marks on the wall or doorQuantity: set of 12 springs, including bases and screws; size (L x D): 85 x 25 mm/8.5 x 2.5 cm. Useful tools: Wide base provides better spring support, hideous white rubber bumper eliminates door marks; the thickness of the spring has strong toughness and provides cushioning effect between the wall and the door. Installation instructions: Put the screw into the hole in the metal plate and screws on the wall or door, then twist the spring on the plate; door handle attaches to a motherboard to avoid knocking from the wall. Specifications: Material: metal, rubber Size: 2.5 cm in width, 8.5 cm in length Color: Silver, White, Gold, Bronze, Quantity: 5 pieces Package Contents: 12 x door stop spring with base plate 15 x screws