Durable plastic Hot Tub cover replacement safety clips, compatible with our covers. 1 set includes 4 of the male end that can be slit to thread into strap, 4 of the female ends to attach to the tub, necessary screws to install them. We also provide keys to the locks for safety to keep the cover on your spa securely and to prevent pets and small children from gaining access to the spa. If you have a young family this is a must. It is also great for the country as it keeps the wild animals out of your hot tub.