The Bolt Cleaner Set MBC-30S is a pneumatic cleaning tool kit featuring a 1/4 inch tool insertion, compatible with standard compressed air systems. It offers efficient bolt maintenance and cleaning, ideal for professional mechanical and industrial applications. Key features: - 1/4 inch tool insertion for broad compatibility - Includes four nozzle attachments for varied cleaning tasks - Three stiff-bristle brush heads for detailed scrubbing - Compact, durable blue carrying case with molded interior - Portable design with handle for easy transport and storage