Inflatable Boat D-ring Pad/ Patch &ndash; PVC Black 3 3/4" - 2 Each Made with the same material as leading PVC type inflatable boats. Strong 1 1/2" stainless steel D-Ring. Ring is secured to the patch with both stitching & gluing for a strong, durable bond. Apron Diameter: 3 3/4" 95mm D-rings also available in Gray