Bryant Locking Plug-Nylon, Nema L5-30, 2 pole 3 wire grounding, 30A 125V, 70530NP      $26.71

Bryant Locking Plug, Tech-Spec, 2P 3W Grounding, 20A 125V, Nema L5-20, 70520NP      $14.80

Bryant Locking Connector, 20A 125V, 70520NC      $14.67

Bryant Plug, 15A 125V, BRY5226NP     $9.15

Bryant Connector, 15A 125V, Nema 5-15R, BRY5269NC    $7.75