33 COE borosillicate glass rod by Northstar
NS-079 Blue Spruce is an opaque blue/green. Work in an oxidizing flame to keep the clarity. Reduce for interesting gray streaks that appear to be growth rings of a tree.
Diameter: 3/16" - 5/16" (5mm-8mm)
Length: Approximately 20" (51cm)
Rods sold by 1/4 lb
*Please note: our totals may vary slightly. We charge for exact weight shipped and will try to ship exactly what you order, but the weight may vary slightly.