Ingenious Kick Design: the metal door stopper adopts thoughtful design,just a kickdown,no need for manual handling,and when the doorstop is fixed to the floor,you can simply step on it,then it will go up,very convenient for you to use Non Slip Rubber Tip: our kickdown door stop has a height adjustable rubber tip,which features with a non slip 3D curved structure,and is made of quality material for all floor surfaces,you can use with confidence Versatile Performances: this door stop has a wide range of applications,ideal installations for hard wood,concrete,tile,carpet,also suitable for a variety of places,such as commercial door stops,garage door stops and most household doors Simple installation: the door stoppers for bottom of door have no complex steps to fix on,and they can be easily installed on the closure plates,or be replaced in holes previously drilled Quality Material Selection: the tall door stoppers are made of quality material,solid and stable,strong against breakage or bending,reliable enough to keep the door open; Use these door stops to avoid the wall from cracking,or some loud noise from door crashing