Bunsen Burner Tube 750mm

High quality, UK manufactured, flame-retardant grey neoprene Bunsen burner tubes, with bonded, reinforced, pre-formed ends, for ease of connecting and removing from gas taps.

Q = What are the inside and outer diameters of the tubing and also the end pieces of the bunsen burner tubes?
A = The actual tubing has an I.D. (bore) of 5.0mm and an O.D. of 8.5mm.
 The black end pieces have an I.D. (bore) of 8.5mm and an O.D. of 12.5mm.