250VAC Material: Porcelain 3/8" threaded nipple Total height:95mm~96mm Ceramic height:31mm~33mm Bakelite height:12mm Total length of Iron stent:38mm~39mm( include the height of Iron thread 10mm) Screw Terminals Turn Knob ON/OFF E-26 Medium Base Package Included: 1x Porcelain Rotary Socket Knob Switch as pictured Please Note: *** Do Not Exceed 660W *** Before purchasing please check pictures provided for proper fitment. Welcome to contact us if you have any questions, we give quick response