Flexible steel; 5/16".
Rubber covered for gas-tightness.
Rubber connectors at both ends.
Burner tubing fits all burners,
Available in 2-ft, 3-ft, and 4-ft lengths.

Chemistry School Lab Equipment Suppliers in India 

Ltekonline are the manufacturers of Burner Tubing Burner Lab used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Chemistry Lab Equipment for Engineering Teaching Lab in Universities