Using these auger bit teeth is easy. First, choose the right type of tooth according to the ground condition. If you're working on soft dirt or clay, go for the Standard Earth Teeth. For tough compact soil, frozen ground, or asphalt, pick the Tungsten - Carbide Teeth. And when dealing with the hardest and most abrasive ground, use the Rock Teeth. To install the teeth, simply use the tool - less locking pin provided. It will keep the teeth firmly attached. When you need to replace a tooth, it's a quick process. Just remove the old one and put in a new one. Here are some important things to keep in mind. Make sure the locking pin is properly in place to prevent the teeth from falling into the hole. Also, don't try to use Rock teeth without a Rock bit for mounting. For maintenance, regularly check the teeth for any signs of wear. If you notice excessive wear or damage, replace the tooth right away. This will ensure the best performance and safety of your auger bit.