Expansion Screw Petal Nut(50 Pcs) Style:M4*20 Quality Material - Durably made

Quality Material - Durably made from high quality materials for longtime use

000 violent bending tests

Our special features are a minimum of weight

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

without frequent addition

Expansion Screw Petal Nut(50 Pcs) Style:M4*20 Quality Material - Durably madeHelp 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