Size: 10mm x 14mm( 3/8 inch x 9/16 inch) (I.D.xO.D.); Length: 4m/13ft; Wall Thickness: 2mm(0.08 inch) Operating Temperature: -76°F to +428°F; Hardness: 65 Degree Silicone Rubber Tubing - will withstand repeated use and for visual inspection of fluids. This silicone tube is made of silicone rubber which is nonreactive, flexible, and resistant to high temperatures. Multi-purpose: Transferring liquid and gas, such as liquid handling, peristaltic pumps, siphoning, drain, aquaponics and water & air hose for aquarium etc.It can be used as a protective conduit for wiring.