*With labor-saving device
*Multinational patent
*Screw diameter: 4 to 8mm (5/32 to 5/16 inches)
*Instructions:
*Drill a hole following the precise diameter of bindings hollow
*Use a hammer to have bindings hollow railed into the hole
*Keep the distance between the screw and wall for about 5mm
*Buckle the screen tight with anchor riveter
*Various hook with hole is available