The four pack gate plates are great, they are durable enough to stand my dogs from tearing off the prongs. However, the large dog spikes are less than desirable. My dogs pulled the prongs right off of the bar so I had to invest in cables to weep in and out of the bars to prevent them from pulling from pulling up the prongs. They are now working on pulling their way through the chain-link part of the fence. This is no reflection on you. These dogs are just destructive. I am now waiting conduit pipe in and out of the chain-link fence holes to make the tension harder for them to pull on.