Jim Cramer's Stop Trading! Buy National Oilwell

Buy National Oilwell Varco (NOV Quote) "right here, right now," Jim Cramer said Tuesday on CNBC's "Stop Trading!" segment.

Cramer said the oil-rig builder "has a sanctioned monopoly" and is printing money "like the U.S. Mint." He expects the stock, up $4 Tuesday to $64 and change, to hit $70 "in a heartbeat."

Cramer also likes FedEx (FDX Quote), which he called a cheap stock that's "best in show." Cramer expects the company to benefit from another stumble by rival UPS (UPS Quote) and to surge 30% from a recent $114.

Last but certainly not least, Cramer reiterated his strong buy on Countrywide (CFC Quote), citing Tuesday's news of another bankruptcy in the subprime lending arena. Cramer said the shakeout in subprime means investors should buy the so-called best-of-breed player, Countrywide, which Cramer said will be taking market share.