Easy to Install:Just fix one clip on the wall by long screws with the bulge face up,and fix another clip on the furniture by short screws with the bulge face down,finally Interlocking mount them.Wide applications:Interlocking picture hangers are great for securing picture frames,art works,exhibition paintings,posters,headboards,clocks,mirrors and more.Sturdy enough picture hanger hooksConstructed of type premium grade stainless steel,ensures the stability and long-time service,keep you safe from falling of wall-hung objects.The interlocking design allows it to be repeatedly instaland separated,and never slid off.Seamless Mounting:When properly mounted,just leave a tiny gap of 5mm between picture frame and wall as the photo hanger measures merely 2 mm/ 0.08'' in thick per piece,there is only a very tinny gap against the wall.Pls note: It may not applicable to installing headboard that with floor trim board cause the finished thickness is smaller than the gap.