Es Fitting And Cord Is Suitable For All You Screw In Globes Including Ceramics. It Now Comes With An On/Off Switch So Making It Easier To Control Your Light/Heat Source. The Globes Can Be Placed Straight Into The Fitting And Thye Cord Plugged Into A Thermostat. The Ceramic Fitting Is Two Piece So Is Handy For Fitting To Glass Lids Or Other Suitable Set-Ups. (Max 250Watt)