Low-profile QuickBOLT utilizes the 100% leak-proof, code-compliant, and UL certified Microflashing®. Microflashing is a stainless steel backed EPDM washer that, when compressed, chemically bonds to the roofing to create a watertight seal. It can be installed on asphalt shingle, TPO or EPM roofs without lifting shingles or removing nails and staples. Kit includes 5/16 x 4 in. QuickBOLT2 with 3-inch Microflashing, low-profile L-foot and dual-drive shoulder screw.