Designed with a high-density graphite crucible and a ceramic shield, with an ability to withstand temperatures up to 2550°F. Dimensions: Graphite Crucible Outer Flange Diameter: 2-1/4" Base Diameter: 1-3/4" Height: 3-1/2" Interior Diameter: 1-1/4" Depth: 3-1/4" Outer Ceramic Shield Flange Diameter: 2-3/4" Base Diameter: 2-1/4" Height: 3-1/2" Interior Diameter: 2" Depth: 3-1/4"