4" Perforated Insulation Pins with Washers Aluminum Insulating Nails Wall Plug | eBay
PATIKIL 2 Inch Perforated Insulation Pins with Round Washers, 50 Pack Aluminum Insulating Nails Wall Plug for Fixing Foam Boards to Wall or Ceiling : Amazon.co.uk: DIY & Tools
115mm Metal Pin Insulation Board Fixings pack of 200