1High Compatibility: Suitable for FeelFree kayaks, for Johnny Boats, and for 3 Waters Kayaks, making the adapter a versatile choice for kayakers with different kayaks and kayakers. 2Durable Construction: This adapter is made of anodized aluminum to withstand the harsh marine environment. , and will not be affected by salt water, Uv rays, etc. 3Reliable Connection: The plates creates a secure, tight connection between the accessory and the kayak, which ensures that your accessory stays securely in place and won't wobble. 4Easy to Use: With the adapter plates, you can easily customize your kayak setup by easily attaching or detaching the accessory to or from your kayak's rail system. 5Practical Parts: Equipped with O rings, these plates give you a practical experience whether you need to attach a fishing rod stand, camera stand or any other accessory.