36mm Steel Insulation Washers And Screws For Insulation Fixings Including Tile Backer Boards XPS Insulation And More Packs of The 100 (35mm Screws x100 and 36mm Washers x100)

Used these to fix tile backer board on chipboard floor. They are nice and thin and hold the board tight without interfering with the tile

work great

disappointing, this washer is not suitable for use with small headed galvanised nails as were ones previously bought on amazon!