About the product: The insulated ceramic tube is used for the protection of cable bundles, ceramic bead electronic wires, protection of electric wire and heat insulation, widely used in protection sheaths, electric heating elements, insulators, etc. Good Choice for you: • The ceramic tube is made of ceramic to protect the wiring, with an appropriate wall thickness suitable for electric wires or cables. • The ceramic tube is resistant to high temperatures, temp up to 1600 Celsius(2912 °F), 1000 insulation voltage, heat resistance, high corrosion resistance. Specification: Length: 15mm/0.6 inch Bore Diameter: 10mm /0.4 inch Max Outer Diameter: 15mm/0.6 inch In the package of: 20 Pack x Ceramic Tube Easy to install: Confirm the hole diameter of the ceramic tube, just put the wire or cable into its hole. Tips: It is recommended you wear gloves for installation to avoid the ceramic from breaking to scratch your hand.