●Stainless steel D-rings are securely attached to the patch. The D-ring on the kayak is solid, easy to install and has a strong adhesive so you dont have to worry about it falling off ●Made of high quality material, strong and durable, high breaking strength and high UV resistance. Very easy to install and use ●Clean the backing with solvent before using a durable, long lasting, coarse adhesive for best results ●Suitable for PVC inflatable boat, raft, dinghy, kayak, canoe, surfboard ●Delicate and compact, lightweight, easy to store and carry, can be used in large scale