Perforate Insulation Pin With Washer Perforated metal base with nail Ø 2,4 x 100mm and metal washer Used for insulation of metal structures and vessels. The perforated base is secured to the metal surface with special glue or double-sided adhesive. After installation of insulation it is secured with the washer. For greater protection can be used and plastic capapplied externally to the metal washer. Packing: Carton 250 set