Steel Anchor plate with D-ring - Bolt or weld to structure - Portable fall arrest anchor point - Pre-drilled 1/2 in. holes - D-ring with anchor plate - 3M DBI-SALA - FallProtectionUSA
CargoSmart 4.5-in Silver D-ring in the Specialty Fasteners & Fastener Kits department at Lowes.com
CargoSmart Heavy-Duty Bolt On Recessed Mount D-Ring with Back Plate 3/8 in. Dia, 4 -1/2 in. x 5 in. 6,000 lbs. (1-Pack) 877 - The Home Depot