Heavy-Duty industrial grade L6-30P locking plug.  UL Listed, CSA Approved. Rated for 30 Amps, 250V.  Commonly referred to as a "Twist Lock" plug or "Locking plug".  NEMA L6-30 plug mates w/ L6-30 connector or L6-30P outlet.  In Stock, ships within 24 hours from Raleigh, NC.