The LH0379 Leviton 910-001 is a BA15d Double Contact Bayonet lamp socket. It has a 1/8 IPS male threaded bushing for mounting. The Leviton 910-001 has two 12 inch teflon wire leads and is rated for 150 watts and 125 volts. Designed for applications needing robust bayonet bulb connections commonly found in specialized lighting fixtures.