Expansion Screw Petal Nut(50 Pcs) Style:M4*20 It is useful for removing

It is useful for removing immediately a watch glass for replacement of the glass

1 x Pedestal

without frequent addition

And it is convenient to carry or store

Expansion Screw Petal Nut(50 Pcs) Style:M4*20 It is useful for removingHelp you complete all kinds of fixed work easily FEATURES Easy To Use 1. Drill a hole to the recommended diameter. 2. Tap the anchor into the hole until it is flush with the surface of the substrate. 3. Attach the setting tool to the head of the screw. Squeeze the to expand the anchor.(Small sizes may be set using a screwdriver) 4. Remove the screw and place it through the fixture then back into the anchor. Tighten the screw until the fixture is