The play tool sets have oversized, plastic toy nails that might cause children to choke, according to the Consumer Product Safety Commission.
The recall is an expansion of a 2009 recall of about 1.6 million workshop sets and trucks with the same kind of toy nails. The new recall involves an additional 11 models.
Little Tikes, based in Hudson, Ohio, has reported two incidents in which children choked when the toy nail got stuck in their throat. Both children made a full recovery. The incidents occurred before the 2009 recall.
The workshop and tool sets were sold by retailers nationwide from 1990 through 2004.
The Associated Press contributed to this report.