Tornillo de expansión de zinc Anclaje de caída

installation method
1: The size of the holes must be appropriate. Choose the right drill bit (the sizes of drill bits used in various specifications are explained in the size table below). Keep vertical when punching to prevent the drill from swinging to enlarge the hole.
2: Use bamboo chips or other similar things and screw them into the holes. Never slip. However, it is better to do the first step, this method is unavoidable.
3: Hold the screw head with pliers and turn the nut to make it pull out the screw and expand the inflation sleeve.