Which tools are powered by air and require knowledge of their features before operation?

Pneumatic nailers are tools that operate using compressed air, making them distinct from the other options listed. Understanding the features and operational specifics of pneumatic nailers is essential prior to use because they have unique characteristics that influence how they should be handled. For example, knowledge about the appropriate air pressure settings is crucial to ensure both effective fastening and the safety of the operator. Additionally, awareness of the type of nails suitable for the specific nailer and the mechanisms for clearing jams or performing maintenance enhances user safety and tool efficiency. These aspects underscore why training and knowledge about pneumatic nailers are paramount before operation. In contrast, angle grinders, table saws, and band saws are typically powered by electric sources and involve different operational considerations not related to air pressure or pneumatic systems.