A set of dumbbells once sold at Costco is now under recall.

Johnson Health Tech Trading and the Consumer Product Safety Commission (CPSC) have announced the voluntary recall of the BowFlex 552 adjustable dumbbells due to safety concerns. The recall was initiated because of reports indicating that the weight plates of the dumbbells can come loose from the handle while in use, which poses a risk of impact injuries.

This recall affects not only the BowFlex 552 adjustable dumbbells but also the BowFlex 1090 adjustable dumbbells. These products were sold at various retailers such as Costco, Best Buy, Dick’s Sporting Goods, as well as online through Amazon and BowFlex’s official website.

Nearly 4 million units are involved in the recall, according to the CPSC.

In a statement, the CPSC mentioned that BowFlex Inc., the company that manufactures these dumbbells, had filed for bankruptcy protection in March 2024. As part of the recall, Johnson Health Tech Trading has committed to providing a solution for the BowFlex 552 and 1090 adjustable dumbbells that were sold by BowFlex Inc. (previously known as Nautilus Inc.) prior to May 2024.

To date, Johnson Health Tech Trading and Nautilus have received more than nearly 350 reports of plates dislodging, resulting in at least 111 reported injuries “such as concussions, abrasions, broken toes or contusions,” CPSC said.

Those who purchased BowFlex 552 from Costco should stop using them immediately before returning them to a store for a full refund.

Consumers who purchase recalled dumbbells from other retailers should contact the Johnson Health Tech Trading Customer Support Team at 800-209-3539 from 8 a.m. to 7 p.m. CT Monday through Friday or email recall@bowflex.com.

”For units sold by BowFlex Inc. (formerly Nautilus Inc.), consumers can request a refund in the form of a prorated voucher and a one-year JRNY digital fitness membership,” a CPSC statement said.