The recall includes "Mainstays" folding metal card table and chair sets.
Walmart has received 10 reports of injuries from collapsing chairs. That includes finger and fingertip amputations.
You should stop using these folding tables and chairs and return them to Walmart for a refund.
For more information: http://www.cpsc.gov/en/Recalls/2014/Walmart-Recalls-Card-Table-and-Chair-Sets/