Blast for hours instead of minutes without ear protection while staying within OSHA noise limits. These nozzles cut sound at the source by controlling airflow as it exits. They’re up to 17 dB quieter than standard nozzles—the difference between the roar of a jet engine and the drone of a lawnmower. They have a carbide inner liner that holds up to the intense abrasion of high-speed media to maintain their bore size as long as possible. A plastic jacket shields the liner from bumps, drops, and abrasive rebound. You’ll need nozzle couplings (sold separately) to mount them to your blasting hose.