GL14 or GL18 Glass Tube with thread (pair) 2mm thickness

Glass blowing supplies. Borosilicate Glass.

GL14 tube measure (single sided)

Lenght: 66mm

Outside Diameter: 13mm

Inside DIameter: 8.25mm

GL18 tube measure (double sided tube)

Lenght: 205mm

Outside Diameter: 15mm

Inside DIameter: 11mm