Our tube bolts with steel nails can be used for fixing a wide range of materials on ceiling or wall, including insulation boards, foam panels, sheets, and other materials that require load spreading during installation.SpecificationColor: WhiteMaterial: Plastic, SteelDiameter: 45 mm / 1.77 inchTotal Length: 40 mm /1.57 inchPacking List: 50 x Polypropylene WashersAdvantageWasher made from durable polypropylene material, our insulation nail has good toughness and won't break easily. The shooting nail is convenient to use, no pre-drill required for installation.Instruction1. Load nails into the insulation nail gun.2. Aim at the place where holes need to be drilled.3. Press the nails into the insulation cotton.4. Pull the trigger to drive the nail into the wall.Note:Please check the sizing and compatibility before purchasing.