Legrand-Pass & Seymour 1008316CC10 Medium Left Hand Turn Knob Single Circuit Applications 250W, 250V, Medium base, electrolier metal shell Lamp holder, Removable turn knob, single Circuit, 1/8Ips tapped bushing with set Screw, bulk Adds Extra shine to your product Manufactured in China Metal Lamp Shell/Turn Knob Longer metal base with removable turn knob 250 volts 250 watt Base Single Circuit Electrolier , 1/8" IPS Bushing with set screw