Bullet Poitns:1. Easy to install and easy to use.2. Quantity: 6 pieces, excluding glue. You need to buy additional glue.3. The D ring is made of 304 stainless steel and high-quality PVC, which is strong and durable, and is corrosion-resistant for long-term use, even in humid environments and salt water.4. Patch diameter: 9cm / 3.15inch. Stainless steel D-ring diameter: 32 MM (1.25 inches)5. This D-ring is suitable for PVC inflatable boats, rafts, dinghies, kayaks, canoes, SUP, surfboards, paddle boards. Tips: Please rough the back and clean the surface before gluing, which will make the D-ring patch more durable.Specifications:Material: 304 Stainless Steel , PVCPacking list:6*Patch (without glue)Package Including.