Perforated base pins1,The Self Stick Insulation Anchor, or Stick-Up Hanger, is a fabricated 2" X 2" ... on the reverse, or installation side of the anchor base. 2,An insulation pin is pre-attached for impaling and installing various ... .), while other diameters are available. This insulation anchor and is used in conjunction with Self Locking Insulation Washers, or Speed Clips, the length ...