Box of 100 Duro Dyne 1-1/4" Dynastick Self Adhesive Insulation Fastener Hangers (# SAH114) 1-1/4" nominal length; pin: min. 12 gauge zinc plated Base dimension: 2" x 2" galvanized 28 gauge steel Adhesive: Polyethylene foam impregnated with rubber based adhesive For use with 1" insulation