Insulation Anchor (Hanger), Nylon, Perforated Base On Midwest Fasteners, Inc.
Perforated Insulation Pins 2-1/2 Inch, 1.5 Inch Self Locking Washers Round, 7/8 Inch Aluminum Insulation Hangers Insulation Dome Cap Washers for Wall and Ceiling (50Set/150Pieces): Amazon.com: Industrial & Scientific