Heavy-Duty industrial grade L5-30R locking connector.  UL Listed, CSA Approved. Rated for 30 Amps, 125V.  Commonly referred to as a "Twist Lock" connector or "Locking connector".  NEMA L5-30 connector mates w/ L5-30 plug or L5-30P inlet.  In Stock, ships within 24 hours from Raleigh, NC.