Size Details--The Black Burner Tripod is about 12.4cm(4.9inch) wide, 11.7cm(4.6inch) long, 13cm(5.1inch) thick, 7.85cm(3inch) inner diameter. Great Quality--All the tripod holders are made of premium metal, high hardness, heat resisting and durable.100% brand new and high quality. Easy to Use--This instrument can be used with alcohol lamp and asbestos nets.First put asbestos network above it, then add beakers, flasks, etc. The following can be put alcohol lamp under it for heating. Scope of Application--It is one of the most commonly used instrument in science teaching experiment tools, suitable for physics and chemistry teaching , laboratory and more. Satisfactory Service--Provide the quality assurance and the money back guarantee. If you have any questions,please feel free to contact us, we will definitely try our best to help you out.