Two part Epoxy

4-1/2" diameter with 7/8" arbor

There are multiple pieces of a vertical lifeline assembly for proper function as fall protection equipment

All plastic construction

DeWALT TEK-5 DrillIt® Drill Screws with Bonded Sealing Washer, #5 Point Type, 5/16" Indented Hex Washer Head, Stalgard Finish NO DESCRIPTION Two part EpoxyDEWALT TEK 5 DrillIt screws self drill through thicker steel and include a bonded sealing washer for a weathertight fastening point. Product Features #5 point type drills through extended capacity steel 5 16" indented hex washer head with bonded sealing washer Stalgard finish for enhanced corrosion resistance Self drilling design eliminates pre drilling steps