Check the listing for details. 2.4" Perforated Insulation Pins with Washers Aluminum Insulating Nails Wall Plug. Condition: New. Listed at 17.53 USD. Insulation pins and washers function as core anchoring parts, suitable for fastening insulation materials in diverse scenarios: HVAC duct insulation, building wall insulation, equipment thermal insulation, and display board installation. They work seamlessly with a wide range of substrates, including fiberglass mats, extruded polystyrene boards, insulation foam boards, and wood panels.SpecificationColor: SilverMaterial: Aluminum, galvanized ironWidth: 24mm / 0.95 inchNail Length: 60mm / 2.4 inchHole Diameter: 1.5mm / 0.06 inchWasher Diameter: 20mm / 0.8 inchPacking List: 50 x Insulation Board Fixing Nails; 50 x WashersAdvantageCrafted with a galvanized iron base washer, paired with aluminum nails, this assembly delivers insulation, improving load-bearing capacity and outstanding durability.