Self-Stick Insulation Pins 3-1/2 inches (100 pcs with 100 Self-Locking Washers and 100 Dome Caps)$$Hardware

Included: 100 Self-Stick Insulation pins, 100 self-locking washers, 100 aluminum dome caps Aluminum dome caps: 12 Gauge Aluminum, 7/8" Diameter Made in America with high quality materials Strong durability, and corrosion resistant ADHESIVE FOAM: 1/32" thick double sided foam with release paper.