Lightweight,strong, durable and long lasting.Easy and convenient to use.Stainless steel D ring is secured attached to the patch.Elastic and flexible rubber latex core covered bungee rope. Suitable for PVC inflatable boat, raft, dinghy, kayak, canoe, SUP, surfboard. Patch Diameter: Approx. 8.2 cm / 3.2inch D Ring Outer Diameter: Approx.4cm / 1.58 inch D Ring Thickness: Approx. 0.4cm/0.16 inch Applicable People: UnisexOutdoor Activity: Surfboard Colour:White Material: PVC+Stainless Steel+Polyester Package Contents: 4 x D-Ring Patch1 x Rope(2.5m) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.