Increment borers and hammers are tools commonly used in forestry and tree research to collect samples of tree cores. Increment borers are cylindrical devices with a spiral auger on the end, designed to extract a small, cylindrical sample from the trunk of a tree without harming the tree. These samples can be used to study the tree's growth rate, age, and overall health. Hammers are used to drive the increment borer into the tree and are typically made of durable materials such as steel or aluminum. Both tools require skill and experience to use effectively and safely and should be handled with care to avoid injury or damage to the tree. It is important to follow proper safety procedures when using increment borers and hammers, and to use them only for their intended purposes.