Jim Cramer's Stop Trading! Buy National Oilwell

Buy National Oilwell Varco (NOV Quote - Cramer on NOV - Stock Picks) "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 - Cramer on FDX - Stock Picks), 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 - Cramer on UPS - Stock Picks) and to surge 30% from a recent $114.

Last but certainly not least, Cramer reiterated his strong buy on Countrywide (CFC Quote - Cramer on CFC - Stock Picks), 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.