Made for ALC model 40013 Spot Blaster for correct fit and performance, Includes (1) 5/16" ceramic nozzle for wear resistance and longer service life, Includes (1) 5/32" air jet to maintain proper airflow and media draw, Designed to run at 20 CFM @ 80 PSI for strong, consistent blasting output, Great as a replacement or spare assembly to minimize downtime and maintain steady results.