Devardi Glass Boro Rods, 1 lb, COE 33, Clear 5mm Stringers Borosilicate Solid Rods

Devardi Glass Boro Rods, 1 lb, COE 33, Clear 5mm Stringers Borosilicate Solid Rods

Devardi Glass Boro Rods, COE 33 Clear Glass, 1lb

Devardi Glass Boro Rods, COE 33, Mixed Colors, 3 lbs borosilicate solid rods