Lightweight, flexible mantles heat various sized hemispherical round-bottom flasks up to 450°C. The Electromantle replaceable ceramic heating cartridge is coupled with a spun aluminum PTFE-coated casing for maximum protection and easy cleaning. Every unit is supplied with a built-in power controller, indicator neons, and a rod support (rod not included, see 303-600-04 series). 115 volt. One year warranty. CSA Approved.