WASHINGTON -- The following product safety recall was voluntarily conducted by the firm in cooperation with the Consumer Product Safety Commission. Consumers should stop using the product immediately unless otherwise instructed.

Name of Product: Scubapro® MK 20 First Stage Regulators

Units: About 48,500 units.

Manufacturer: Scubapro® USA, of El Cajon, Calif.

Hazard: Over-tightening of the Yoke or Din retainer during annual servicing of these regulators could result in a stress crack and failure of the regulator. If this occurs during a dive, air supply could be interrupted, posing a drowning hazard.

Incidents/Injuries: No injuries or underwater incidents have been reported. Scubapro® USA has received eight reports of units that failed after being serviced.

Description: The recall involves first stage regulators that are marked with the Scubapro brand and identified as the MK20.

Sold at: Authorized Scubapro® dealers nationwide from January 1996 through December 2001 for about $260.

Manufactured in: Italy and United States.

Remedy: Scubapro® USA has been providing a service upgrade kit via the authorized dealer network since May 2005 which contains a Yoke or Din retainer that prohibits over-tightening during annual service. Consumers can easily identify if the service upgrade has been completed by counting the vents on the plastic saddle located on the regulator. If the service upgrade has not been completed, the consumer should bring the regulator to any authorized Scubapro® dealer to have the service upgrade completed free of charge.

Consumer Contact: For assistance in locating the nearest authorized Scubapro® dealer or for more information, contact Scubapro® USA toll-free at (800) 731-6685 between 8 a.m. and 5 p.m. PT Monday through Friday, or go to the firm's Web site at www.scubapro-uwatec.com