2320 | NEMA L6-20R 20 Amp 250 Volt Flush Mount Locking Receptacle with Ground- 2P, 3W

Leviton 2320 is a 20 Amp, 250 Volt, NEMA L6-20R, 2 pole, 3 wire industrial grade locking receptacle with grounding.  The female style industrial grade 250V outlet offers superior performance, long lasting reliability and features a nylon backing with brass connectors, and backed by a lifetime warranty.  Equivalent to Hubbell HBL2320.  This product fits Leviton 2321 and Hubbell HBL2321 plugs.  You can find the plug here