These D-rings are formed metal rings in the shape of a D. They are often used with metal straps to secure the D-ring to a surface. Once installed,
D Rings - Rounded Thin Base - (Solid Brass) - 2 Pack
1.5 in - Pins, Rings & Clips - Fasteners - The Home Depot
3/4 D Ring Solid Brass - DEE - Leathersmith Designs Inc.
Everbilt 5/8 in. Zinc-Plated D-Ring 811138 - The Home Depot
Metal D-rings are useful for creating junction points on bags, where two leather straps connect together. They can also be used inside and outside
3/4 Metal D-Rings
D-Ring .12 x 5/8 x 3/4 MB Wire Brass Plate
Emmaline D-Rings - 3/4 inch (20mm) – Threaded Lines
3/4 Metal D-Rings - Klum House
3/4 Arch D Ring – Fireweed Stitches LLC
D-Rings (4 pack) - 3/4 Inch – Zipper Valley