For use with the Pool Fence DIY backyard pool safety system from Life Saver, this Black replacement pole can be used with the 4 ft. Pool Fence DIY fencing. The aluminum pool fence poles with 1/2 in. stainless steel pin fits into the 5/8 in. holes required by Pool Fence DIY. A family owned and operated company based in Delray Beach, FL, Pool Fence DIY has been has been keeping little feet on solid ground for over 25-years.