Plasti-Grip 2 in. Plastic Masonry Fastener

2 in. Plasti-Grip Plastic Masonry Fastener (PMF) is used to attach 1/2 in. to 3/4 in. rigid insulation or mineral wool to concrete or CMU block. Simply pre-drill a 5/16 in. Dia. hole thought the insulation into the concrete/CMU, insert anchor and tap flush with a hammer.250-pieces per boxNo screws or pins requiredWill not rust or corrodeThermally efficient all plastic design2 in. length2-3/8 in. Dia. headInsulation fastener