Devardi Borosilicate High Quality Glass Tubes - COE 33 Can be mixed with other boro glass brands, but no guarantees are given. Please always test first. Not to be mixed with soft glass (COE 104).

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Devardi Borosilicate High Quality Glass Tubes - COE 33 Can be mixed with other boro glass brands, but no guarantees are given. Please always test first. Not to be mixed with soft glass (COE 104).

  • 6 Devardi Glass Clear COE 33 Boro Tubes.
  • Lengths - 11 to 12 inches, 12mm x 1.5mm Wall
  • Must use propane/oxygen Torch. Will not melt with propane only torch. Not to be mixed with COE 104 (soft glass)
  • Please click the blue "Devardi Glass" above to see all our listings.

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