2-3/4 in. Plastic Masonry Fastener

2-3/4 in. Plasti-Grip Plastic Masonry Fastener (PMF) is used to attach 1 in. to 1-1/2 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.”,”highlights”:[“Helps attach 1 in. to 1-1/2 in. rigid insulation or mineral wool”,”Thermally efficient plastic design resists rust and corrosion”,”Designed for use in 5/16 in. Dia hole in concrete or CMU block”