General Information：[1]Note: Please note that this item needs to be used with a nail or screw when you using it. The washer's center hole diameter needs to be checked before purchasing.[2]Advantage: These flat washers are not just spread the load and prevent damage to wall ceiling insulation board, foam panels, or sheets during installation, but also have a function on fix or fasten the screws through its center hole.[3]Instruction: 1. Put your insulation board on wall or ceiling. 2. Drill a hole on the insulation board and wall. 3. Fix the insulation board to the wall with washer and nail(not included).[4]Application: Our washers can be used for fixing a wide range of materials on ceiling or wall, including insulation boards, foam panels, sheets, gypsum board and other materials that require load spreading during installation.
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